Always bought one at the little shop at Sunbeach...and they offer a pump to blow it up and each time someone around has offered to blow it up for me. Have paid $10 for the single and $18 for one a little bigger and better quality. Sunbeach also let me leave it stored there during the trip so didn't have to worry about carting it back and forth with me to the beach and it was always around each day I returned to use it. Left it behind for other's to enjoy when I left.