Originally Posted by
Germany_chris
UN300 and origin 8 bottom brackets are cheap but available in minimum lengths while I'm sure they are quality products (read I dunno) they're not available in all lengths which is fine since they probably hit a vast majority of common sizes. The problem comes in special sizes and/or higher quality there isn't anything outside of campy that's in between the $20-$30 Shimano/Origin 8 and boutique $150-$250 SKF/WI/Phil/TA.
Have you actually looked very hard? Tange makes a variety of BBs under multiple brands (i.e. IRD) and at multiple quality tiers, for instance.
I'd also question whether a lack of intermediate-tier would actually contradict my point about legacy support, since even the $30-ish products are pretty good. They're often lighter than a 40-year-old adjustable bracket that's being replaced, and they tend to enjoy many years of smooth function with no maintenance.