I still haven't figured out how polyurethane wheels for rollerblades and skateboards could sell for $5-10 a piece just a few years ago (some with complicated cores and multiple plies, and of all different durometers) while terribly generic and simple polyurethane bushings sell sometimes for several times the amount. Can anyone explain that to me? I can't fathom spending $1000 to replace all the mounts and bushings for my driveline, suspension, and subframes when I could buy 200 rollerblade wheels for the same amount.
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