I think determining what is a good $$/brand/type ratio that's getting me. Plus there seems to be endless manufacturers and used prices are everywhere.
For example, these bikes all seem to be functionally similar. What makes one better than the other?
https://baltimore.craigslist.org/bik/6056799834.html
https://baltimore.craigslist.org/bik/6082138227.html
https://baltimore.craigslist.org/bik/6059196323.html
Then there are bikes like this for many multiples in price.
https://baltimore.craigslist.org/bik/6076726570.html