True on the bikes that take 24" tires. The tire selection however, is much more limited. I know there is a FB page for surly/salsa sales/trades. There are also local to me MN fat biking FB pages, so I'd suspect you would have similar wherever you live as well. Anymore, seems like the bikes will pop up on these pages, and never show up elsewhere. Fwiw, I have been seeing used fat bikes for sale, maybe one small frame. I know Framed sells a lot of fat bikes for less than $1000, and they are certainly decent, and not tanks. Particularly if you swap out the tubes for tubeless tire setups, quick 2 pound loss right there.