Ripstik Caster Board best price

My 8 year old son bought the RipStik with his saving and I hate us. He is good with skates and skateboards, but can not mount this couple of feet. I read the reviews on Amazon and they said the product was and how great it was fun. He tried to mount and can not get more than a few feet. I do not really recommend this product to a child. He said 8 years but I would not even consider that they are in their high teens. I am very disappointed that he spent so much money and can not mount it. The front and rear wheels and spin in a circle at the same time.