guess it depends upon the computer. I would imagine the auto ones are a dime a dozen. 5 speed ones are harder to get, but not impossible.
The yard I got the one for my 93 wanted 15 bucks for one, so if they are good then selling them you could get anywhere from 90 down to 15 bucks which is better than no bucks.
I'm on the prowl for a back up computer for my 88 5 speed...the just in case thing.