Templates sell for whatever people are willing to pay for them
Personally I am a great fan of CSS heavy minimalist pages and yours have far too much glitz and bloat and not enough content. Look at dell.co.uk, ebay.co.uk, amazon.co.uk for business examples and simplebits.com
http://superfluousbanter.org/ and
http://orderedlist.com/ for some examples of the blogs of some of the best webdesigners in the business.
My point is, if you were a company would you want that template and looking at the competition the answer would in my opinion be no because its too "siggy" for want of a better word, too much like a large forum sig and not enough like a professional design.
But maybe thats just me
Try and sell them but if you cant, look at whats out there, try a new design, rinse and repeat