Firstly the stick only comes in Jr or Sr, there is no intermediate size. Jr is selling anywhere from $150.00 to $180.00 and the Sr sells for $230.00 to $250.00.
You can call 1800Faceoff I know they have them.
I would however suggest that you take your $200.00 and buy a $20.00 wood stick and spend the remaining $180.00 on a camp teaching your son how to use the stick.
I know I'm stating the obvious but the "O" stick is not going to make your son a better player