The airport is the most expensive place to rent a car. There are lots of car rental outlets in Kata Beach.
Rates for 24 hours start at 800 Baht for unlimited milage. You only pay extra for petrol. A driving licence is required for car hire. REMEMBER if you rent from a private shop, make sure the car has full insurance cover.
Make sure any damage + injuries are covered by insurance. Check the vehicle for any damage before renting. In Phuket we drive on the left.
DON'T DRINK AND DRIVE. Enjoy Phuket, there's a lot to see!!