Who do/would you use? I've tried Abernethies on Huntershill and the BMS on Auchinairn Road.
I paid something around £100-£125 for front pads and discs for the Mk3 Mondeo at BMS last year. I'd have to go home and check the receipt to be sure.
[edit] Also, for some idea of parts prices, Eurocarparts has started putting prices online for a lot of stuff. Take those prices, subtract some for trade and you have an informed estimate of the garages costs.