Glossary

Buy Box

The Buy Box is the primary, default purchase option shown on a marketplace listing when multiple sellers offer the same product, the one a shopper sees without clicking through to see other offers.

The Buy Box is the primary, default purchase option shown on a marketplace listing when multiple sellers offer the same product, the one a shopper sees without clicking through to see other offers. It matters in e-commerce data because winning or losing the Buy Box is usually driven by factors like price, stock and seller performance, and losing it can mean losing almost all the sales on that listing even while still technically offering the product. Tracking Buy Box status alongside price and stock for every competing seller on a listing shows which factors are actually correlated with winning it, rather than guessing from price alone.

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