Not to hijack your thread (don't people always say this when they are about to hijack a thread?).... but, we can do a casual kilt in any custom weave tartan for $445.
http://giftshop.scottishtartans.org/kilts_casual.htm

This is in 16 oz worsted wool, woven in Scotland.

If Celtic Croft has the same thing for $375 that is indeed quite a deal! But I just thought I'd mention that, in case Celtic Croft doesn't pan out for you. $445 for a casual kilt in authentic heavy weight Scottish wool might be more appealing than $700 for a casual kilt in poly-viscose!!!

(I would assume the higher price for the PV kilt would be due to the fact that someone would have to invest in a much larger run of the special weave tartan in PV. Whereas in the 100% wool, we could have just enough woven for your single kilt).