Yep, trolls are thrifty bastards (that is to say, cheap). And I'm not much into miniatures anyway. But if you're, say, rooting through the underhive, searching for heretics to purge, and you do enjoy using miniatures, you might wanna check out this guy's paper scenery and such, more than suitable for use with your favorite 28 mm miniature plastic-man-dudes.
IKUBE liveable habitat modules, control panels and warning labels, and rather familiar-looking cargo ship.
It's all free, but I suspect he wouldn't mind a tip or two on his paypal account if you find his stuff useful.