Some Berninas can be had for a song:
http://seattle.craigslist.org/skc/art/4678773090.html
Some are a little bit more:
http://seattle.craigslist.org/skc/art/4649356781.html
And still others cause me to scratch my head:
http://seattle.craigslist.org/sno/art/4646518857.html
The last one is a re-badged Juki (I have a Juki just like it).
There's an 830 Record that's been for sale in this area for $189 for about a year. It keeps appearing on CL. Perhaps a cracked gear.
My honest question (that is related to the FW thread): Are Berninas worth their average prices? I've never sewn on one (that I remember) let alone own one. The Bernina name is so well-known and so highly regarded. I hope I get the chance to test a vintage model, especially the 217.