I think I paid less $50.00 for my second one. I bought it at auction and did not go for a preview. I wanted the 65 cabinet, as it was light oak. Turns out that the cabinet was trash, but the machine was perfect.
However, my mom's 15-91 needs to be rewired. It was in storage for several years and the wiring between the plug and the motor is semi-melted. I've not yet gotten up the nerve to tackle it. Be sure to check that, as I think the wiring is do-able for a novice, but not easy, unless you are really handy with a screwdriver.
All that to say, I don't believe I'd pay $80.00 for a machine if it needed rewiring. Unless you have a case or cabinet you like, consider the time, effort and cost to repair the cabinet or find a replacement.
I believe you can find a 15-91 in good condition and in a serviceable cabinet for $150.00 or less, at least around here. If your $80.00 machine meets your criteria, is in good condition and has a decent cabinet, jump on it.
jmho
bkay
edit: Rewiring the original plug from the machine to the wall is a piece of cake. You can also buy replacements.
Last edited by bkay; 03-19-2019 at 06:29 AM.
Reason: add a thought