You plan on going on a 3 month vacation 8 months from now. You can pay $4,500 per month during the vacation

You plan on going on a 3 month vacation 8 months from now. You can pay $4,500 per month during the vacation, or you can pay $13,000 today. Which alternative should you take and how much does it save you in present value term if your investments earn 3.00% APR (compounded monthly)?