Some of my friends get special offers to buy chips, etc that last for like 2 hours at a time. It will be like 1M chips + 20k LP for $199 (and lower tier buys as well). This appears to be in lieu of the standard 199,000 + VIP bonus % = $199 offers. I've never gotten one of those before. Are they random? I only get the standard chips + VIP % Bonus = $$.