When is the transaction binding?

Once you have accepted an offer for an item, you are bound by that acceptance and cannot subsequently cancel the transaction in favor of other offers. Therefore, avoid accepting an offer unless you are absolutely certain that you can and intend to sell the item. This saves both the buyer and yourself from a negative experience.

Although a transaction is generally binding, various circumstances may prevent the sale from going through. In such special cases, cancellation may be permissible, but always remember to inform the buyer. Read more about this via the link below.