Same here. TPS is exact same price as dealers. And a PITA to get hold of. They just NEVER answer their phone. I just go to my local Skoda dealer with the part numbers for any VAG part I need, they are at least as quick, same price, and easier to work with than my local TPS.
Got hold of them easy enough but didn't have anything in stock. Walked into the Dealer and the parts guy picked everything up off the shelf and even checked with one of their techs as I wanted to see if the discs were supplied installation ready (like Pagid) or needed cleaning at install. Have needed other parts since for other jobs and have just gone to the Dealer after that.