Raceroom DLC is now on sale in the Steam Summer Sale until 9th July 2019.
I've just picked up these ones but there is a lot more on sale (DTM 2013, DTM 2014, DTM 2015, ADAC GT 2014, etc) but I was eyeing those 1992 DTM cars for a while now.
The 1992 DTM pack is just $4,99 NZD:
https://store.steampowered.com/app/3362 ... _Car_Pack/
The Nürburgring Legends pack is also $4,99 NZD:
https://store.steampowered.com/app/4552 ... g_Legends/
Anyone else here has these for Raceroom? Would be keen to give these online a try as well sometime.