China Syndrome

Yesterday I brought a surfboard up to Anaheim Ca that I had sold on Craigslist. Unit G had a wholesale surfboard showroom in front and tropical furniture showroom in the back half. The people there weren't surfers,simply Chinese business people. The board I sold them was a handshape,but all the boards in the show room were drugstore quality.Cheap too,shortboards 235.00,longboards 300.00,and SUPs 450.00.The name of the shop was Danai Watersports.Why did they pay 290.00 for my used handshape?