rest assured that if someone comes after you and offers, say, $15 more, he will then put you as the second option so if the other guy fakes, he will then honor your original agreement. Personally, I think this is a shady way of doing business online,
Yes, that is what "best offer" means, what else would it mean? You take offers from people until a predetermined time, and then when that time comes you sell the item to the highest offer. If that person backs out of the transaction, then you sell the item to the next highest offer. Any time you see "best offer" in a classified ad this is how that person is selling the item, and everyone knows this. Why is this "or best offer" concept so hard for you to understand? This is basically the same way Ebay works. Do you think that is "shady" as well?