How reserve prices work
A reserve price is the minimum amount the seller is willing to sell an item for. If the reserve price isn't met, the item won't be sold.
Sellers have the option to set a reserve price when listing an item in a REVERSIBLE auction. Unless they disclose the reserve price in the listing, it remains unknown until the auction concludes.
If your bid falls below the reserve price, you'll receive a "Reserve not met" message. Even if you're the highest bidder when the auction ends, you won't win the item unless the reserve price is met.