I was lucky. On E-bay I was the only one to bid on a 221 about a year ago. Got her for $200. She's in very good condition and sews like a dream. I took a class on how to maintain her to keep her purring which is quite simple.
I'm looking for a centennial since my birthyear is 1951, yes, I'm going to be 60 in a few weeks, ouch. Would also love to have a 222 but so far they're out of my price range.