Greg--
Where are you located? Not in your profile, and almost always when folks post asking for help on finding new tools, if you give your location someone will chime in with a good deal on Craigs List etc...
For instance: if you were in AZ or southern CA, I could point you to over 10 good quality used Powermatic 66, or Delta Unisaw, for about $700. Or I'd sell you my Delta contractor saw with 56" bies fence and router table built in. Or someone else would offer.
Honestly, having had a contrator saw for most of my life, then a PM66, and spending a LOT of time looking for tools on craigs list... I honestly think that anyone who wants a full-size cabinet saw (which should be you) has a very good chance of finding one for $700 with 2-3 months of patience. Take the table off, carry it downstairs in a couple pieces.