Slushbox fluid changes aren't exactly cheap either these days. There probably aren't any new cars left anymore with autoboxes that can use basic Dexron II/III fluids.
The dry-clutch 7 speed DQ200 used with engines with less than 2 liters doesn't even have a service interval. It's just normal transmission fluid like in any manual, I guess. According to the dealer it's sealed for life, but a careful owner will probably change it at some point. I've never bothered servicing the transmission on any manual car, personally.
DQ200 is the one with the issues that are ruining the reputation of all VAG DSG boxes btw. The wet-clutch 6-speed DQ250 in all the 2.0 TDI, TSI and TFSI (all the RS'es, that is) is fine.