Given he's mentioned Colombia in this video I'm commenting here. And because it makes me remember the very first bicycle I ever had, which was a steel one with Monark decals though I'm not really sure if it was actually made by Monark. It kinda look like this one but was dark green and had a non-chopper plastic black saddle.
Growing up and living in the suburbs of Bogotá and the countryside I can't be completely sure if I have ever seen a Buffalo here, but most probably at some time I've seen one.
And it can be because you can find even cheaper new bikes here - though not even half as good or reliable as this one - but because its weight and single-speed-ness, which for we people in the andean range is really a big deal. Though for people in other areas of the country this can be absolutely fantastic and Seth explains those reasons very well in this video.
But even then people like my father would really like a bike like this - he was a farmer and used to go around to work on an old steel single-speed road bike. On the way uphill it was useful even not being able to ride it but because he could tie some bag or stuff or something and aid him carry the load, on the way down home he just rode it and saved time getting there.
And noting that it's not just him who used to use bikes that way but many people who work in farming and rural living you can understand why a bike like that is really appreciated - not to travel really long distances with it but to aid them with their travel which in other way would be a tough hike, and being absolutely reliable with minimal maintenance.
He told me sometimes people in bike shops tried to talk to him into putting gears to it (it had a rear derailleur hanger but no front derailleur hanger nor mounts for friction shifters) but he liked the simplicity of maintenance of the thing.
Another detail he doesn't mention in the video (or not that I could understand if he did) is if the pump can be carried mounted somewhere with the bike and carry it - my father had one of those long pumps mounted below the down tube of his bike and it was pretty neat to be honest, I even did that for some time with my bike too.
Hell, I'd like a bike like that too but I just happen to hate squared bottom brackets.