I tried the same with bearings, but people werent interested in the higher grade bearing kits, although I was selling 4 or 5 kits a month people were more interested in spending less and getting cheaper ABEC3 rated kits instead of ABEC5.
Price usually wins over performance I found, as people arent anal enough to care about ABEC rated bearings turns out people are more willing to purchase lower rated and lower priced kits.
the grade and performance debat will carry on long after where in our graves but someone once said anything over ABEC3 or Grade 5 balls wont give you a performance advantage noticable worth the extra £££.....
....I agree with this now ive tested them for months and compared kits
I still run ABEC5 kits but when it comes to replace them I think I will be more than happy to go back to some sealed ABEC3.