I recently tried Beezid.com and had a wonderful experience with them. I bought twenty seven dollars worth of bids plus got ten extra bids for just buying bids to begin with. I didn't try to win anything really big like the laptops, big screen tvs, ect. I did however bid on a bissell steam shot cleaner which retails for one hundred dollars and the price of them is just about the same everywhere. I bid a few times and won the cleaner for. 13 cents and paid $9.99 for shipping and handling. I even had bids left over.
The best thing about it all was that when they went to ship my win they called to inform me that they couldn't ship to a PO Box so they took my physical address and shipped it to me priority mail because it had already taken longer than it should have. I recieved the cleaner and all the pieces were there and it worked great! My house has never been cleaner lol. I am unsure however about bidding on the bigger stuff it may be a lot harder that the smaller stuff.