Hi guys. Recently I've designed a few websites for an agency in London. - been no problem at all. Gave them a fee that was accepted, I designed them, their developers built them. They've now asked me to design separate Mobile sites for the same people. How would I go about quoting a price for these? Obviously mobile sites are smaller, simpler versions of regular sites. Do I just charge a smaller fee? Or am I expected to do it for nothing as the main site is already designed? Advice?! Cheers!