Also, what sort of car are we talking about? It'll cost a lot more to replace the discs on a big autobahn cruiser than it will on a little city run-about.
As a ballpark, though, I'd count on around CHF100- for a set of pads, CHF250- for a set of discs, and about an hour-and-a-half of labour (CHF300- at a main dealer) to fit them.
I just got my rear brake fixed. Two shiny new discs on an A4 were including work some 150-200 EUR in Germany (I also changed the weels, dsiposed some old tyres... alltogether 250). I am sure that AMAG would have charged more than 600 CHFs for the same.
Go cross border shopping and you can maybe save enough for one of those GPS...
focus's have brake wear indicator things (sorry don't know the name) when the rears wear out they make a hell of a noise. simple to replace pads yourself, only pita is you need to wind the pistons back in, not just push them, this needs a special tool.
find a local garage indy garage and get them to take a look and quote.
for just pads it should be quick and quite cheap, if you can get access to the discs then run your finger over them and see if you have a lip or they are pitted or cracked, a small lip is ok.
have you ever replaced the front brakes?, just out of interest really, as last time I was back in the uk my mates car had worn out rears yet the fronts where fine, and the fronts do more of the braking then the rears so I'd expect them to wear out quicker.
Anyway I understand that the cost of the spare parts is not obvious.
Either one buys the parts on the internet links (some links given in this forum), and pay for the "worker time" or one goes to the dealer, asks estimation and let them do the work + parts.
There's no such thing as the "official prices" of ford parts on ford.com.
So it's like a close market, quite different than computers