inflation.ggTHE MAPLE CLASSIC WORLD ECONOMY, HARNESSED
Intersects each chart’s existing range; headlines and basket weights stay unchanged. Dates use the source calendar (timestamp rows use UTC), not your display timezone. Daily launch-day aggregates cannot be split before and after the launch hour. Shaded launch markers identify calendar days. Launch dates & source →
As of the goods MPI source timestamp
The mesos per NX needed to preserve NX’s starting buying power in this fixed basket.
Modelled reference NX rate × goods MPI / 100.This is not an observed cash-sale or executable exchange quote.
Calculating from the fixed goods basket…
INSIDE THE INFLATION
GOODS PRICE LEVEL / MODELLED NX
MEGAPHONE OFFERS · SEPARATE FROM SALES
A dated source-derived cash-item benchmark is a cross-check; offers and this proxy are not verified completed trades.
MapleStory Market’s published hourly chat/megaphone medians. Spread = seller median − buyer median; percentage spread divides that difference by their midpoint. Only matching source/hour pairs are compared; missing sides stay missing. This is a difference between offer medians, not an executable order-book spread, profit opportunity, or evidence of a completed sale. Offers never enter MPI or the cash-item sale estimate.
* Wolbi’s supply change is an item-specific caveat; see the compact basket note.
PLAYER-REPORTED PRICES · SEPARATE FROM SCANNER SALES
Incomplete dated reports, not an hourly series; gaps remain visible.
SOURCE CLOCKS
A healthy check is not a new trade. Daily, hourly and capture clocks are assessed separately.
See every source and limitation →MARKET ACTIVITY
Scope: the daily source’s Free Market shop-sale medians and recorded counts, estimated as Σ(daily median × recorded sold volume). This measure excludes smegas, direct player-to-player trades, NPC earnings and server balances. These are source-reported sales, not server-verified transactions; the daily source does not disclose its exact sale-inference rule. The full feed includes cash items and the basket, so the series overlap. Missing observations stay missing; stack quantities, exact trade values and changing coverage limit totals. Turnover is not total meso circulation →
50 ITEMS / ONE FIXED BASKET
Real source history, visible volume, transparent weights.
THE MESO PRICE INDEX
Volume is the feed’s recorded sold units/count; stack quantities cannot be independently reconstructed from this aggregate feed. Turnover is a median × volume estimate. Base weights and “Vs. base” use the fixed reference period: .
SEPARATE FIXED BASKET / CASH-ITEM PRICES
A fixed cash-item price index beside the unchanged source-filtered goods basket.
Awaiting a validated cash-basket definition in this snapshot.
This experimental index weights known-price cash items by their qualifying reference-week estimated meso expenditure. Membership, base prices and capped expenditure weights stay fixed. Daily prices need at least five recorded sales; missing observations carry forward only after a qualifying price has been observed. Incomplete initial priced coverage stays blank.
A cash price index measures cash-item meso price changes with fixed base weights. The NX exchange-rate estimate divides cash-item meso prices by fixed NX purchase costs and uses changing daily recorded-volume weights. Their percentages measure different things. Neither changes the existing NX headline or the goods basket.
FROZEN BASE EXPENDITURE WEIGHTS
Current index prices are the latest qualifying daily medians, with their source dates shown. Equipment/cosmetic mixes, thin markets and source-inferred sales remain limitations. This table is separate from the NX pricing explorer’s daily/rolling controls.
CASH SHOP / IMPLIED EXCHANGE RATE
Tradeable cash items compared with their fixed NX purchase prices.
KEEP THE SIGNALS SEPARATE
Offers and player reports inform comparisons; they do not enter the cash-sale estimate or MPI.
THE INPUTS
PRICING TABLE EXPLORATION
This table explores a chosen window; it does not change the headline NX estimate or fixed MPI. The default 3-day lookback changes only this table’s cash-item price estimates, not the frozen reference period ().
Gross estimate from source-reported cash-item sale medians before fees, separate from the modelled goods-inflation NX benchmark. Fees are not deducted; individual item prices vary.
Daily-history price = Σ(daily median × recorded volume) / Σ(recorded volume), using only qualifying days. This is a volume-weighted daily-median estimate, not exact transaction VWAP or a pooled transaction median. The low/high columns are the minimum/maximum qualifying daily medians divided by fixed NX cost, not a trade range or interquartile range. Rolling capture ranges are unavailable.
The captured scanner supplies one median and one item-specific window per item. These cash-item windows span 3–30 days; there is no underlying daily scanner history here to reconstruct other windows. Source-input backlog: dated historical captures or a documented lookback query, with window bounds, recorded volumes, sold-price basis and timestamps, would be needed before enabling custom rolling windows. No new query or connected source is implied.
Single-item NX prices from the documented Cash Shop schedule; bundles, crate cosmetics, expired offers and unknown purchase prices are excluded. Recheck this schedule when Nexon changes prices. Each daily rate weights the item’s meso/NX ratio by that day’s recorded sale volume.
INDIVIDUAL ITEM / SOURCE HISTORY
OPEN METHODOLOGY
A useful market measure starts with knowing what is being measured.
The fixed reference period is : the initial seven source-calendar dates beginning with Grand Launch on October 21. This project chose that dated opening period as a reproducible starting point. These are calendar-day aggregates, not seven full 24-hour intervals from an exact opening hour; 18:00 UTC is the separately announced Founder’s Access time, not an established Grand Launch time.
For MPI and Cash Basket, 100 represents the basket at its reference prices; individual days in that week need not equal 100. NX percentage change compares with its frozen reference-week rate. The versioned baseline stays fixed: there is no arbitrary week chooser that could silently rebase or drift it. The 48h, 7d and Founders controls change chart views only. The pricing table’s source-calendar lookback changes its cash-item estimates only; it changes neither the baseline nor the headline.
Each category dial uses that category’s reference-price mix on those same dates, rather than the whole 50-item basket. Its arc fills from 0 to the needle on a shared scale. Category average weight is total category basket weight divided by its item count; individual item weights can differ.
Basket v2 freezes the 50 eligible items outside the source’s Cash Shop category with the largest estimated meso turnover in : daily median price × recorded sold volume. Eligibility requires at least five reference days with recorded volume of 50 or more. For eligible items, all reference days with at least five recorded sales enter the base calculations. These counts do not establish stack quantities or independent traders.
Source-category scope. Only the source’s Cash Shop category is excluded; funding origin and the client cash flag are not independently screened. Mystery Palette Exchange Coupon (2430045), source-classified Use/Consumables, has 2.01% frozen basket weight and is listed for 5 Aurora Stamps in Nexon’s official stamp shop. Reviewed MCW v1 metadata reports isCash: false for this coupon. That client field does not determine paid acquisition or index eligibility, and the stamp-shop connection establishes no fixed direct NX cost. Client item metadata ↗ It is distinct from the excluded Cash Shop item Mystery Palette; the coupon’s membership and weight remain unchanged.
Base price is the sale-volume-weighted average of daily medians in that reference week. Base spending is that price multiplied by recorded base sale volume. Weights are spending shares, capped at 8% with excess redistributed until all weights sum to 100%. Thus a cheap ore with many sales and an expensive scroll with fewer sales both contribute in proportion to estimated mesos spent. The cap applies to base weights; a large later price change can still have a larger effect.
This v2 history is reconstructed using a fixed basket selected later. It is separate from the earlier count-selected v1 series, whose definition and published values remain archived. An index change caused by switching definitions is not a new market move.
Daily medians × sold volume approximate turnover; they do not equal an exact transaction-value sum. The source does not expose the underlying stack-level trades here. There is no claim to measure total meso supply. Clean and upgraded equipment can mix in aggregate medians, introducing quality/composition bias.
Nexon announced Founder’s Access for October 6, 2026 at 11 AM PDT (18:00 UTC), and Grand Launch for October 21, 2026. The Grand Launch time is not established here. Chart markers show these calendar days; daily aggregates retain their source-day boundaries and cannot identify prices before or after an intraday opening. Founders period means October 6–20 inclusive; Grand Launch onward begins October 21. All-time charts may extend the axis to October 6 when the first recorded point is October 7; no observation is added. Nexon launch announcements via Steam ↗
Turnover is a flow over a period; meso balances are a stock at a moment. The same coins can fund repeated purchases, while stored or inactive balances remain unseen. This feed does not measure money creation (faucets), destruction (sinks) or how often money changes hands (velocity). Consequently, these data identify neither total meso supply nor a defensible confidence interval. Estimating supply would require independent balance coverage and validated measurements or assumptions about those missing quantities; no numerical estimate is published.
The US Bureau of Labor Statistics, UK Office for National Statistics and Statistics Canada weight consumer-price baskets by household spending. Keeping a reference mix stable helps distinguish price changes from changing purchases; agencies periodically refresh baskets and adjust for quality. Their detailed formulas differ: this project borrows the basket principle, not national CPI coverage. Sources: BLS, ONS, Statistics Canada.
Here, estimated meso turnover replaces household spending. This fixed 50-item basket measures selected game-market prices, not a player's cost of living. Liquidity screens, base-weight caps and dated coverage disclosures improve reproducibility, but cannot establish complete coverage or manipulation immunity. The goods basket excludes items classified Cash Shop by this source; it does not independently exclude every item with monetized origins. This source-category rule and the coupon exception above define its analytical scope. NX's percentage change uses cash-item ratios with changing daily volume weights; MPI uses fixed base-expenditure weights, so the two measure different things.
Fifty is this project’s initial, inspectable market basket size, not a U.S. CPI rule or a statistical guarantee. It focuses on regularly traded items with usable reference-week observations. The coverage below shows how much activity it captures; excluded items and changes in item quality can behave differently.
Membership stays fixed between explicit basket versions. I review broader coverage and category concentration separately; adding items would create a new version and preserve this history. Recorded sale counts are not independent-trader sample sizes, and a larger count alone does not establish accuracy.
Steely Throwing Knives had prices during the fixed reference period (October 21–27, 2026), but only 25 reported sets in total and no day with recorded volume of at least 50. Basket eligibility requires at least five reference days meeting that liquidity threshold before ranking items by estimated meso turnover. Its exclusion is a reference-period liquidity decision; a high price alone cannot make an item eligible. These are the publisher’s recorded counts, not independently verified transactions or traders.
The source has a Stars category, available in Price Check. The five-category overview groups throwing stars under Weapons. Kumbi Throwing Stars, Mokbi Throwing Stars and Wooden Top are included in v2, with 9.84% combined base weight. Steely remains in the broader catalogue. Later basket versions can reflect stronger evidence and changes in the economy while preserving the old basket and its history; this FAQ describes the frozen v2 selection.
These are scanner-derived sale estimates rather than user-entered asks. The source’s underlying scanner may infer a sale when a shop closes and an item is gone. A disappearing listing or a grey row is evidence with limitations; neither independently proves a trade. I do not classify an item as sold merely from its sprite color.
Using a fixed basket, sale-volume-weighted prices and capped spending shares makes a single posted quote less influential after this site is published. Smega asks and player reports never enter the MPI; these choices reduce manipulation risk, while coordinated trades, wash trading and scanner errors can still distort observed sales.
Asking prices, signed-in player reports, and smega advertisements are separate signals. They are labeled and plotted separately when observations are available. Missing series stay empty instead of inventing history.
I retain source observations with their own clocks, price bases and limitations, including evidence that cannot be matched to an index item. Henesys Store, Shumi and classicmarket.kr identify MapleStory Market as a market upstream, so their overlapping displays are not independent corroboration; I do not sum repeated records as extra trades without stable event IDs.
The cap, narrow market coverage, short base period and game-specific supply shifts make this a commodity-style market index, rather than a household cost-of-living index. BLS methodology ↗
SOURCE HEALTH / PROVENANCE
Market observation time, source publication time, and this site’s check time are different clocks.
Green: healthy within the stated clock’s scope.Amber: delayed, dated capture or no qualified live feed.Red: failed check or stale/missing source.Daily-source age bands: up to 36h / 36–72h / over 72h. Collector-check bands: up to 30 min / 30–180 min / over 180 min. These are this site’s display thresholds, not provider guarantees. Capture times never establish fresh trades.
The collector keeps the last valid feed when an upstream request fails. Malformed data and overlapping collectors cannot replace it. Every snapshot preserves its original source time. Source age and collector health are shown separately: daily-source age uses 36/72-hour bands, while collector checks use 30/180-minute bands and failed checks turn red immediately. Failed checks mark retained daily data amber unless its source time is already over 72 hours old or missing. Missing daily time is red; a missing check time is amber unless the check failed. Qualified intraday input is green only when under 40 minutes old and otherwise amber; older or absent intraday input alone does not turn the status red.
Your open tab checks a small version file about once a minute while visible, with jitter and backoff. Prices are fetched once by the collector, never per visitor. Charts and tables use the same versioned payload.
Open the lightweight last-known page ↗ · Download this snapshot JSON ↓
Reference only · not connected. The partner pages linked in the source-lineage note are not additional feeds connected to this site. The daily developer feed’s underlying market upstream remains unverified here.
Earlier artifacts are preserved in the project’s history archive. The previous basket definition and its published MPI values remain available; v1 and v2 are separate series.
