Bin Effect

The process by which an eBay seller, after seeing another seller's Buy it Now (BiN) price, lists their own similar item for a higher price.

Responsible for most eBay price inflations and the reselling market in general.
Doesn't have to apply to eBay, can also apply to brick-and-mortar stores and markets.

I can never find deals at pawn shops or thrift stores anymore due to the bin effect.