What the hell is going on with shops?

Like I tell my sons all the time "Everyone can do what we do just ask them". Claiming you can rebuild a turbo 350 or a 727 with a book puts you on the same level as a guy who has 5-10 or more years experience and is rebuilding 5-6-or 8 speed transmissions is just crazy. You do it wrong and so what he does it wrong and he lives with it. Yes that repair seems high but there is a update that includes pulling the valve body and modifing the plate and valve body to make sure this code never comes back. Were they doing that also? or just replacing the part. If they were and the service writer did a poor job explaining what they were going to do then that is on them. Good shops have the tools and the ability to fix the cars brought to them and that cost money. I have spent over 6 grand updating our 4 diagnostic systems in the shops this year already.You have to take all of this in and realize it is all factored into the bill. But all of that said I think they still maybe high on the est.