I don't buy a lot of stuff off Ebay, maybe once a month, if that. Bought an item two weeks ago and it still hasn't arrived. I've sent a couple of emails to the seller but no reply and this guy is a power seller too. He says in the listing that delivery will take a couple of days. It only cost £3 but that's not the point and this is not the first time it's happened to me when buying on Ebay.
If I don't get a response by tomorrow, I think I'll leave some negative feedback. Really annoying when this happens!