I picked up a Swedish tunic and pants awhile back, never have used them in a game but the price was pretty decent.
http://www.majorsurplusnsurvival.com...tegory_Code=23
I'll take some better pictures of the tunic and post them here if anybody is interested. You'd have to get different buttons and you might have to try dying the fabric to make it more closely resembe field grey, but if you wear a small or a medium this would certainly be a cost effective alternative. Not sure if Major's still stocks these in larger sizes or not, their web page crashed on me when I tried to follow the link to the larger sized jackets.