Andrew wanted the item to be reseved for him for several days closing the deal. I received higher offer ($60) vs Andrew's one ($20) and I asked Andrew if he could offer the same amount. As he didn't, I decided to sell to the buyer who was offering more, given I had not received yet any payment from Andrew to reserve the item. I noticed Andrew several days in advance so I don't understand these behaviours towards sellers. It seems he doesn't accept that sellers sell to the highest offer.