Unfortunately Wood modern doesn't appear to be a standard tartan so that's probably going to be an expensive kilt to have made. The design is registered but the fabric isn't normally available so you have to order it specially. I have the same problem with the Bruce Hunting tartan. I'd love to have it, but can't afford it.

have a look at the scotweb link on x marks here to give you an idea of starting prices.

EDIT:Scotweb Link - Top right hand corner of this web page