If I remember this right, over 400,000 people bought the UE(based on leaderboard entries the day before official release), 1.5 - 2 million own the game and as of yesterday not even 30,000 played the first Porsche campaign race. I'll check again on monday, but those numbers aren't great. 20 bucks for 20 or more cars and a track isn't bad value, nobody is saying that, but many people feel they should have handled that differently. Personally I'd say the track should have been free and Turn 10 should have made clearer that the UE doesn't give you everything that was planned as DLC before release; I only know because, I think it was Helios, who mentioned there wouldn't be discounts and also because I would have assumed it anyway, as Storm Island and the included cars weren't part of the UE of Horizon 2 neither.