We phoned dial-a-dent for a quote to fix a key scratch from one end of car to other, and a big dent on rear bumper, as well as other minor scuff marks and they were quoting €550! Not too bad.
We are since waiting to put the car through the NCT for a retest before having it done, so can't comment on quality of work.
Sounds like a good price. There is a place of the south circular which is really good on price too. Cant remember the name but they are down the lane across from the garda club
Mine cost €450, that was for panel beating and respray of scratches to the back quarter panel of my car. (I have a 2 door so it was the bit just behind the door)