† Sales are CardBought events on the marketplace contract. Each row = one slab changing hands; multiple resales of the same slab show as separate rows. † vs buyback compares the sale price to the slab's vault appraisal as of the sale (hourly FMV snapshots) × the tier's buyback rate. ≈ marks sales that predate snapshotting — approximated with the current FMV instead.
