I replaced the pads & discs on my Altea this morning, so took some photos while doing it. Here's the process from start to finish. The setup will no doubt be the same as the Golf-Jetta Mk5.
First up, the news pads & discs. I priced them from the local motor factors at just over £52 for some anonymous Chinese stuff, then a price from Euro Car Parts online for ATE brand at £77 delivered. Then I went to Trade Parts Specialist (TPS) and got genuine VAG parts for a shade under £70.00 (a good move in my opinion, and I'll tell you why later). TPS are VAGs own parts
network so they're spot on for part numbers and prices.