The $1000 upgrade was the early 90s here but that was a contracted price. That was what my wife quoted when it was bundled with an HVAC contract. They had a couple of electricians who did these with the A/C company handling all of the permitting, bookkeeping and collections.
I imagine the outlet price is reasonable if you are doing a lot of them at the same time and the walls are open. (no finish work included)
It certainly is ridiculously low for a single outlet call in old work. Fifteen years ago, my rule is I wouldn't start my truck for less than $100.