Sources, dates and calculation rules
How CardIntel prices work
Use a price together with its identity, source date and coverage. This page describes the implemented calculation rules and the information each result can support.
Methodology updated
Where do card prices come from?
CardIntel imports provider catalog snapshots and separately records supported market evidence. A reference quote is not a purchasable listing or a completed sale. Product identity, printing, currency, method and source date determine whether evidence can be used together. Unsupported mappings and quarantined evidence are excluded from supported calculations.
Browse published referencesWhat does the source date mean?
A source date belongs to the provider evidence. Fetch time, job completion and publication time are separate timestamps; downloading an unchanged source does not make its prices newer. Scheduled jobs validate their inputs before a publication becomes visible. Pages show missing or stale states when eligibility or freshness requirements are not met.
Inspect dated card referencesHow is observed history handled?
Dated observations are shown only where supported evidence exists. Missing days are not zero prices, and fetching the same source repeatedly does not establish more independent history. Comparable points must describe the same asset and price basis. Historical charts are not proof of executable prices or trading volume. A new publication does not justify rewriting a frozen historical report.
Explore market contextHow are price comparisons calculated?
The comparison is (observed 30-day daily mean − current reference) ÷ observed 30-day daily mean × 100. Eligible USD catalog quotes require at least seven distinct source dates in 30 days for the same provider, product, printing and method. The latest unambiguous observation on each UTC date counts once. Every eligible candidate participates before sorting and limiting results. The default threshold is 5%; zero is permitted. There is no weighted conviction score, and observed-date sorting does not measure completed-sale volume.
Compare published pricesHow does the Set EV calculator work?
Set EV is a manual scenario: expected value equals the sum of a pool’s reference value multiplied by its expected card count. You explicitly define each pool and expected count, including fractional counts. The calculator uses one published price generation and reports missing prices. These inputs do not establish verified pack odds. A set, rarity distribution or generic pack size alone cannot prove a sealed product’s slot model.
Open the Set EV scenarioHow does the Grading ROI calculator work?
The calculator combines an explicitly entered acquisition cost, eligible service fee, shipping, insurance and selling costs with supported graded value evidence or clearly identified manual estimates. Grade weights are your scenario assumptions, not calibrated probabilities. Missing grade evidence or costs remain unknown. Raw prices do not substitute for graded values. Available fee profiles state their source and conditions; paused services are not offered as available.
Open the grading scenarioWhat do market indexes describe?
Market indexes summarize their disclosed baskets and observed coverage. Their publication, base period and source dates matter when comparing changes. Missing category history is shown explicitly. An independently dated index value is not subtracted from a portfolio return to imply benchmark outperformance. Market context does not determine a personal trading action.
Read the index methodologyHow are holdings and returns calculated?
You enter actual acquisition costs and quantities. Supported current raw or graded evidence determines a holding’s valuation; unsupported or expired evidence remains unknown. Coverage is shown separately from known values. Sales record actual proceeds, fees and quantity changes; an immutable ledger records changes. Editing a holding does not turn a past cost into a market quote or recreate a missing historical valuation.
Manage your holdingsWhat do selling-fee estimates include?
Fee scenarios depend on the selected marketplace, seller profile, currency and fee base. Enter item price, shipping, tax and other relevant costs explicitly. Where a verified fee profile is available, its effective rules and source are shown; otherwise use a manual scenario. Missing costs are not silently converted to zero. Estimates do not establish the fee charged to a particular seller account.
Compare selling-fee scenarios