Goeiemoggel revisited

Voor mazzeltjes op ebay: Typozay.

How it works

Search for "Harry Potter" on Ebay and you'll find lots of auctions (with lots of bids). Search for "Hary Potter" though - and you'll find far fewer auctions (with practically no bids). This is because no-one searches for the auctions with typos.

Generally, the fewer bids there are on an auction the lower the final price. Typozay lets you find common auction misspellings for any item you like.