What happened to it? There seems to be lots of front oil pump leaks (cheap sleve bearing that supports torque Conv nose spins in oil pump housing) Also lots of friction lining flaking off clutch disks--apparently bad adhesive since no noticeable wear on the friction disks

To go through the tranny right is 10 hours on the bench. Parts about $300 + $400 oil pump if it is bad. R&R of 5 hours

You got a very fair deal IMHO