I don't really know if I would call it "satisfied". Basically dealership had the most weight. I could have tried various options, lawsuit, bad press, screaming bloody murder. all were less attractive options.
yes I was able to make sure how much the new car cost as I kept all the transactions separate. I actually had more wiggle room on the new car as google is my friend and the cost of the car was easy information to get and then made sure all the incentives were taken off first than the credit.
would I have done anything different
now that's a bit trickier to say.
We had a few major goals.
1) try to get as much as possible for the old beater knowing that technically the dealer could have said "tough coconuts toots"
2) try and get the best deal on whatever car we walked out with.