eBay puts a few restrictions on how much you must bid in an auction.
Bid too little, and your bid won't be accepted.
The first restriction is the minimum bid: the minimum amount for
the first bid in an auction. The seller sets the minimum bid when posting
the auction. If there are no bids yet, the auction description's "First bid" field
shows the minimum bid.
The second restriction is the bid increment. This is the
smallest amount by which you're allowed to raise the previous high bid. The
bid increment is determined solely by the current high bid. For example,
for a current high bid between $100 and $250, the bid increment
is $2.50. If the current high bid is $127.50, the lowest bid that eBay
will accept is $130.00.
The third restriction is the reserve price. This is the lowest
price the buyer will accept. eBay will accept bids less than the reserve price,
but the item won't actually sell unless the highest bidder meets or exceeds
Not all auctions have a reserve price. If an auction has a reserve price
and it has not yet been met, the auction description will show that fact next
next to the current price.