I've just picked up a Repro set from Spearhead Militaria on eBay (
http://stores.ebay.ca/Spearhead-Militaria). The material is a little thinner and the buttons are incorrect. I have yet to lay it down next to an original, but I'm happy with the fit.
My WPG British tunic is all right and quite durable, but the shade, oooh how I wanted the correct shade. I tried dying it, but it didn't take as much as I'd like.