940 rebuild... should I?

Just found this local Craigslist sad boy did this guy get taken to the cleaners!
Mopar 727 A transmission rebuilt

Wow ok so I should get really good at these and do them for 1/3 of that price and have a nice side income.

Just for kicks I looked on jegs and Summit and they have them new (refurbished) for 1,000 to 1200 with a warranty for crying out loud