The Nevada legislature adopted a statute that makes fighter pay and, I believe, bout agreements confidential. The NSAC says that, effective this month, they will no longer disclose fighter payouts.
Full story at Bloody Elbow.
So, I think that leaves Florida and California as the only major fight states that still release pay information for MMA cards. Georgia and Arizona have disclosed fighter pay in the past, but I don't think UFC or Bellator hold many cards there.