I disagree with ghostrider in one aspect. I would post a price for past work, along with a photo, the size, and other pertinent details, saying "sold for." It could help keep some people from contacting you if they know in advance that your custom quilts are more than they are willing to pay.
I also want to know who I'm dealing with - name of company or person, street address, phone number (the real one even if there's an 800 number) in addition to email address.