Keep in mind that the cost to buy into Premium Races has been lowered by 50% until May 25.
In addition, competing in Open Wheel Races and Premium Races will reward players with double rewards, all week long. So, starting today, all competitors in both Land Races and Special Vehicle Races will receive 4X GTA$ and RP. Not to mention that bet limits on Races have been temporarily increased to GTA$10,000, and Cash Pots for competing in Impromptu Races have been doubled until May 25.