It would amaze people that are not in the know just how little it cost tranny repair places to replace a tanny with a rebuilt one. Their initial cost is for a good core and a tranny rebuild kit ($250-$500)
After that, they just swap your tranny with a rebuilt one.
There is nothing like added profits to replace the muffler bearings, the battery, the floatastat, the innoculator, and all of that other stuff that many people do not understand.
Oh, and I hope they put winter air in your tires as a courtesy?