Bidooba.se was a nice designed Swedish reverse x-price auction website. It worked approximately from January till July. Another well-known reverse x-price auction is Dubli.com, which is still in profit, but maybe because of combining 3 types of auction in one website - reverse x-price, zero-price and unique lowest bid auction.
If we compare 3 types of auctions in one table, then we maybe should make a conclusion, that reverse x-price auction is not viable online. Let us see:
| X-price | Unique lowest | Penny | |
| Bidding | Paid | Paid | Paid |
| Current price | Unknown | You define | Known |
| End price | Market price | Very low | Very low |
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