There is a relatively large co-op in my area that I found about recently although I've lived here for years, and it has most of the positive attributes described above. However, it may have been picked clean during the pandemic since the bikes and parts there are in pretty poor condition. However, I was able to rescue one bike that was kind of a pearl among lesser models. BTW, the bike mechanics in my area, unlike reported above, are skilled at more than changing tires and paid a fair wage including health insurance and other "normal" benefits.