Unfortunatey reasonable prices and adidas fullbody suits don't go together in the same sentence... people want the earth for them!
Just have to wait till they appear on ebay, or possibly ask other members on here if they might consider selling
Here's a coupe on ebay at the moment, not that cheap though :(
http://www.ebay.com.au/itm/252211889292?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
http://www.ebay.com.au/itm/231783029781?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT