How we calculate confidence
RC Data Vault values are calculated from completed sales (sold comps) on eBay and other marketplaces. We treat verified sold prices — not asking prices — as the truth layer for what an RC vehicle is currently worth.
Listings are filtered before they reach a valuation. Parts, body shells, accessories, and bundles are excluded. Outliers and contamination are removed where detected.
Prices shown are the listed sale price as posted on the marketplace. Shipping costs are tracked separately and are not added to the valuation. Marketplace fees such as eBay's seller fees are paid by the seller out of their proceeds and don't change what the buyer paid, so they don't affect our valuations.
Confidence depends on three things over the most recent 90 days:
- How many clean sold comps we have (sample size)
- How recent the most recent sale is (freshness)
- How wide the price range is relative to the median (spread)
A model with many recent, tightly-clustered sales earns High confidence. Wider spreads, older comps, or thin samples bring confidence down.
Values shown on RC Data Vault are estimates derived from public sales data and are not guarantees of price or appraisals.