could someone explain the marketplace with regards to buying and selling.if theres nothing of an item for sale and you put a seller request in and it says youre waiting 4 hrs for delivery of the sale does that mean the sale has been bought? and how then can it change from not being bought and then theres what your selling that wasnt there when you sold it and my items are put on the 47 hours waiting list.this happened with less than 2 minutes left from the 4 hr wait.this tactic doesnt encourage trade?