Why did the Buy It Now option disappear after the first bid?
Buy It Now gives you the chance to purchase an item immediately, before bidding begins. But you have to act fast. Once someone bids, the Buy It Now option disappears. The listing then proceeds as a regular auction-style listing, with the item going to the highest bidder.
Special situations
In a listing with a Reserve Price, Buy It Now disappears as soon as the reserve price has been met.
In a few categories, the Buy It Now option may continue to be available after the first bid, but only for a limited time.