with all this talk of sierra bearrings

I thought i would phone around a few bearing places this afternoon to see what i could turn up, i was quoted prices as follows for the sierra disk braked rear bearing,+vat and per cup and cone unless stated

£10.50
£13.50
£16.30
£43.12 (per side)
£24.26

the 2 first one were from a local company and the guy advised me not to fit the £10.50 ones but to use the £13.50 ones instead. he said he'll discount for 30 bearings or more,