Just looked at VIX Sep Option price at TDAmeritrade, and notice $30C is selling at $1.35, whcih is understandable with the volatility and premium. However, $30P is only selling at under $4 while $VIX.X is at 24.41.
Is $VIX.X different from the underlining VIX price? otherwise, how could $30P is even cheaper than face value?