$225 is not a bad price, but... how much TIME to you get for that price?
For the same money (or maybe $250), I can run with SAFE and get 4-5 hours of track time. Given the focus of the Redline events, I would expect (but could be wrong) that the HPDE folks are going to get shuffled into short sessions in between the "Time Attack" sessions.
Of course, if you're into the whole spectacle that goes along with the Redline Time Attack series, it might be worth it to you. Me, I go to the track to DRIVE.