I've redone the eBay search page that most of you probably won't have seen. I find it quite useful which is why I built it.
There is a link in the top right hand corner.

Honda Trail Bike Forums eBay Search

The search is a custom search that provides you with either a search box or probably more interestingly some predefined searches. The predefined searches use common misspellings of items so that you can find your bargains.