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I am near LaCrosse, Wisconsin. (zip 54636)
I know the CF10'a go for over $700 new, so not sure what you are looking to get for it, but I am hoping to stay under $200.
Dan
The FastFerment or the Fermzilla should be inexpensive enough to buy new. I own the former and use it nearly exclusively even though I also I have a stainless S&S unit. The only downside of the plastic units are that they are not rated for higher pressure fermentation. And they have the advantage of letting you see what's going on like a carboy.