Comment by livueta

Sibling comment has good suggestions. I personally like Dell Optiplex models, e.g. 9020. Looks like right now the best you can do is about 40-45 shipped for a complete one, but I've snagged about six in the last year or two for 20-35. They come and go. Beware of sellers posting the same thing for 100+; they're worth max 50.