Sorry for the mess...and it started with a crooked manager. No fluid, no visible leaks and that's a lot fluid...must have been the invisible type. Listen, the is nothing wrong with a used transmission, they usually come from cars that were dismantled because they were totaled and could not be repaired. You need the year, make , model and engine size. Here's one from a dismantler in GA. And, I bet you will be able to find several in CA. When you purchase one be sure that all the seals are replaced before being installed.
http://cgi.ebay.com/ebaymotors/Porsche-986-Boxster-S-Tiptronic-Automatic-Transmission_W0QQcmdZViewItemQQhashZitem27aa6d150b QQitemZ170363000075QQptZMotorsQ5fCarQ5fTruckQ5fPar tsQ5fAccessories