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What Cambridge TCG has actually accumulated, per game and per source — observation counts, distinct cards, the freshness of each per-(game × source) snapshot, and the date range we've been collecting. The data plane's collection truth, surfaced. The matrix below feeds the per-game coverage strip on each price guide; this page is the whole- platform rollup.
The wholesale aggregator returned no response (timeout or auth failure). The matrix isn't degraded to zero here — the platform prefers honest absence to confident-looking emptiness. Try refreshing in a few minutes; if the issue persists, see /api/v1/sources for upstream status.
Source: price_archive (wholesale RDS) — daily snapshots from each upstream source. Coverage rolls out as ingest pipelines wire up; the matrix is empty when no snapshot has been written yet for a given pair. See /api/v1/sources for the per-source status (shipped / partial / planned), and /methodology/cross-source-pricing for how observations compose into per-card prices.