Open the phone book and look under transmission repair. Rebuilding your original is by far the cheapest route.
Any "pre-remanufactured" transmissions will have a core charge. A new one won't but the cost is astronomical.
Used trannies can be found in salvage yards...
Many to look at online...
http://copartfinder.com http://junkyarddog.com http://www.junkyards.com/automotive/directory/directory.htm There's a few to start with...
