Will take a peek this weekend – my GXP BB is about dead but luckily my mate works for a bearing supplier so will mic the bearings up accurately and post up the equivalent (i.e. sensible priced without “special bearings for gullible mountain bikers” tags) spec.
Most bearings when sold as a single unit have anything up to 900% markup, hence singles on ebay appearing cheap relative to the identical ones in a bike shop which come in a bag with a card topper.
Got a handful of DU bushes the other week to do my shock and have some spares. Asked my mate how much I owed (bear in mind DU bushes normally cost up to a fiver) – “mate it will cost me more to raise the invoice than what these are worth”.
Moral of the story – get to know your local bearing supplier!