​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ If your base rate in Mexico ends up more than three dollars per day autoslash will pay you the difference as their rates are guaranteed (as they have stated to me up thread) they had mentioned to send them a copy of your contract and they will refund the money to you via PayPal. I didn't see that in their reply to you other than answers regarding the insurance. Good luck! Safe travels