My mom and I collect sewing machines. We have a handcrank singer from 1890ish, a singer treadlefoot from the 1910's, a singer 15-91, and another singer (i think either a 99 or 66, can't remember right now) complete with the original stool (that was an exciting find!). Then I have a new home from the 50s, a japanese branded 15-type from the 50s, a pfaff 130, and two old whites (one is from the 20s, the other one I don't remember).
I need to compile a real list, with model numbers, years, serial numbers, all that good stuff, but i haven't had time. only a few of these machines are in working condition. others look like they'll work but i need the wiring re-done before i'll even try, and one of the whites is just pretty bad. Most machines cost under $50, or were inherited. The most expensive one was the handcrank I bought for my mom last year, I spent $200 on it. My favorite find was the pfaff 130, for $12.50 ($25 at a thrift store, white tags were half-off that day!).
I absolutely refuse to work on a newer machine. They aren't built as sturdy, they tend to be shaky, they jam up, all those electronic parts... give me a big heavy hunk of metal, and i'm happy.