Since ( real) featherweights run often $350-$450 I would find a vintage one long before I’d spend the money on a
( new-plastic-fake) one. I picked up a Singer as a gift for someone a few years ago, should have spent a third of that cost on a Brother from Walmart- the Brother is a much better machine.
Janome and Bernina both have small 3/4 machines great for classes. Others may have too.