When placing an ad, you may sell outright and post a price, or simply mention that this is a Blind Bid and that offers will be accepted for "X" number of days. You may also add a starting bid if you wish. (Keep in mind that your ad will be deleted ninety (90) days after submission.). Now what this means for you the seller/buyer, is that offers are made before the time limit expires. The highest bidder becomes the winner!

It is the seller's responsibility to inform the buyer that they have won and make arrangements to complete the transaction.