Sorry, I'm not really sure where this belongs, move it if it should be somewhere else. I would like to know how much it would cost for my blogs design at http://www.metsparadise.com to be used for other wordpress blogs, BUT with different colors.
You'd be able to recolour them in an hour per modified template (at most) - then it comes down to who spends the hour and what they charge. Some of us charge "western rates" others work for much, much less.
if whole template is changed with images and other thinks then around 100-200 will be the price or you should go for hourly service in a good company