Hey, like the other riders are saying the cheepo bearings aren’t really an option as the maintenance time off sets any money saved in the cost of bearings.
Most of the bearings on ebay are ZEN, IBB or IBU so cheap chinesse or cheap european.
You can get good bearings on ebay say INA/FAG or SKF, however I doubt you’ll get them at the same prices I sell them, there aren’t any companies that I know of that take top end bearings remove all the old grease and fill them with expensive grease.
For example a 6902 2rs INA will cost you £8.55 http://cgi.ebay.co.uk/6902-2RS-61902-2RS-FAG-INA-SEALED-BEARING-15x28x7mm-/310202196033?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item48397de041
I can sell you the same quality of bearing for £10.50 for a pair, I have spent 2 years finding my suppliers and I have negotiated very hard to get bearings at the prices I do.
Considering they are weather proofed and will not rust internally, I doubt you will find better bearings on the market.
Thanksto all the people who recommend me 😀