Since you asked:
$300-$699 = 10% cash bonus (2X rollover)
$700-$1499 = 10% cash bonus (3X rollover)
$1500-$4999 = 10% cash bonus (4X rollover)
$5000-$9999 = 15% cash bonus (5X rollover)
$10000 and up = 20% cash bonus (6X rollover)
Always check before you send money but I am pretty sure this is accurate. Also don't forget this is the place with the free 1/2 point for football/basketabll. Ask for details when you call.
PS - before Ivan asks me what the cap is the most you can take is $2000 in bonus dollars. So you can not send more than $10,000 and expect to get a bonus on it.