The best eBay power search on the Web can be found at www.auctionfigure.com. Auction Figure does typo searches, meaning it finds common misspellings of words that can save you a ton of money because other people may not find the listing. It also features:

• Junk Filter - Eliminates all of the work from home scams and the "this is not Apple Ipod" junk from your search results.
• Accessory filter - Eliminates things like chargers and cases from your search results. Great when you are shopping for electronics.
• Multi-site Search - Search eBay.com, eBay.com.au, eBay.co.uk, eBay.ca
• Save favorite searches