Boring day at work, so am surfing Craig's List...here's what I'm finding that might be worthwhile if you're in the area it's listed for!
Tampa Bay/Singer Redeye/fair condition $40
http://tampa.craigslist.org/psc/for/1788048045.html
Phantastic Phinds Consignment Furniture & Home Goods
631 Bethlehem Pike Erdenheim, PA 19038 has a nice Franklin electric machine in a decent cabinet for $63
http://philadelphia.craigslist.org/fud/1788010037.html
A nice Singer Treadle in Stockton (Manteca) $80
http://stockton.craigslist.org/atq/1788384162.html
In Jerico, Vermont, a nice looking White Rotary, $65
http://burlington.craigslist.org/atq/1787938073.html
Sweet old machine in Albany (East Greenbush, NY) in a cab, Best offer, including "free" if no other offers!!
http://albany.craigslist.org/atq/1788146399.html
In Pittsburg, (I'd be on this one like a bee to honey!!) (Aliquippa PA) A National Two Spool machine!!!!!!!!!
http://pittsburgh.craigslist.org/atq/1788445767.html $30.00