Methodology
Three canonical definitions for the entities the GapSense engine commits to. Each page is the citable reference for the concept.
Adjusted EV →
Calibrated pack expected value after correcting for thin tape, execution cost, and pool depletion. The formula and worked example.
Cross-Platform Gap →
The four checks every published gap must pass — identity, grade purity, variant match, post-fee profitability — across nine marketplaces.
Tape Thickness →
The composite weight on [0, 1] used to discount thinly-traded card prices. Sample size × recency × platform diversity, with the calibration constants.