OMG!!! He actually asks US buyers to do the same. From his feedback:
Was told to leave feedback before item would be shipped - US user
Shipping still pending, but great communication with the seller - US user
Fast Communication. Looking forward to item arrival. Good luck with paypal man - Australian user
Seller contacted me said he wouldnt ship till he recieved positive feedback - US user
It seems that he doesn't have every item on hand since in some replies he says that he's going to ship as soon as new stock arrives.
mmm...what to do? I really really want the item... I think I'll wait the 21 days but I'll make sure that the seller has the item. If he doesn't I'll ask for a refund. Priority Mail takes about 1 week to get to me so if I file a complain by the 30th day I should be safe, right?