Reasonable cost of getting front pads replaced at the dealer (2013 S4)?

I’m up in Canada (Toronto) and I just had the 55,000km (35,000mi) service a few weeks ago. The service manager said front front pads would need to be replaced soon and sure enough to the warning light turned on this evening.

I know I’ll pay a premium getting it done at a dealer but I’m OK with that. I just don’t want to get completely screwed over. What’s a reasonable cost to get the front pads replaced? I’m assuming the rotors are just turned and not replaced at the same time.