I don't know if the rules may have changed, but the last I looked ebay allowed people 3 days to respond to contact. It's possible some other contingency is keeping this seller from responding promptly. A lot of people have jobs and families and only do ebay on the side. I wouldn't worry yet. A lot of sellers these days don't bother to make contact, but just get your address from Paypal and ship the item after payment is received. You should definitely have received the Paypal email showing the payment was sent. I just hope you got a good seller who will treat that little machine with the respect it deserves, packing it properly. If it arrives in the amount of time estimated in the listing, you shouldn't have to worry, and I doubt eBay will do anything about a delay until it's quite far out of range. Best wishes, and please post pictures when the goodies arrive!