replacement bearings for 2007 stumpy

plain lazy
plain lazy Posts: 137
edited December 2009 in MTB buying advice
I'm well overdue to replace the bearings on my 2007 stumpjumper. I have seen bearing sets from some bike shops for around £40 but spotted a set in ebay for £20 from what appears to be a bearings trader. Has anyone bought bearings from ebay, are they crap? i my mind bearings are made by bearing manufacturers, not bike companies so there is no way in knowing if the ones on sale in the bike shops are any better than the cheaper ebay option.

tempted to go with the ebay bearings