Check out the frontpage article: http://www.racedepartment.com/raceroom-racing-experience-exclusive-multiplayer-video-fia-wtcc-2013/
And turn up the volume of your speakers
And turn up the volume of your speakers
Just a very rough estimate: 97 bucks get you 12000 vRP. At an average of about 400 vRP per track and about 250 per car that would make 30 tracks or 50 cars or certain combinations inbetween.
But as Matej said, there're sales more or less regularly, so miding those would of course increase your yield.