Airport parking @SJU

Yes. $24 first 24hrs, then $18/24hrs.

There is a service about 5-10mins from the airport for. 9.99/ day  that has a free shuttle back and forth. I don't have the phone# available right now, but if you have an interest shoot me a PM and i can give you details and exact location later. I use them alot..

The place is called Estaciona y vuela. $8.99/day
787-727-0000

Thanks for posting that, adlin20!
Giving information by PM is fine but the idea is to share it here so everybody can use the info.

I have used the place for a trip, left the car there for a week. Not too bad, they have a huge lot, the road to get there is terrible and the car will sit in the sun all day. For $9 a day the car is secure and they have 24/hrs service. Add at least 30 minutes to your trip since they take you to the airport and back.