I wouldn't complain about that price. I would have charged $1K+ to do just the labor... The fact that he's willing to use the parts & fluids you bought without jacking up to premium dealership labor rates in yuppyville is pretty honorable as well.

I absolutely LOATH pulling the transmission pans & dropping valve bodies... Something about laying in a bunch ATF & having it slowly trickle down my arms while trying to finagle the valve body back into place without damaging any of the precision machined surface seals, is quite aggravating to me... It's not a hard job to do, but it is annoyingly tedious / frustrating in my opinion...

Congrats on the purchase, it's a great car IF you maintain them properly with preventative maintenance.