they should be original klein or same quality from what i heard. so pretty expensive (59/69 euros is for ONE bearing, not a set )...compared to ebay. but if you want them NOW and there is no auction running it can always be an option of course...attention to mc1/mc2 versions is needed of course...MC1 has same size upper/lower, MC 2 has different sizes...how this matches with the S/M/L title i do not know but this can be found out.
i recently bought a set of MC2 bearings on ebay for much less...
i recently bought a set of MC2 bearings on ebay for much less...