rwharkness,

Go with the Scottish Tartans Museum on this one. Trust me!

Here's a link to their pricing on custom woven tartans:

Custom woven tartans

I think 4yards will cost about $260, or you could just have him make you a box pleat kilt with that included for $495. (I think it includes the cost for custom woven material). Or whatever route you decide, Matt gave you several options.

Like I tell my club members (because I've been trying to get them to order from the STM); the service is one of the best, the money is helping keep the museum open, and further all kinds of other things in relation to Scottish culture and research.