Nanabird,
I'm finishing up a quilt for a wedding gift and I know I'm going to have some requests for quilts. I plan to nicely say that I'm flattered they would pick me to make their quilts, but that I don't have time to make quilts to sell since I have so many UFOs of my own to finish. If they persist, I'll refer them to our local quilt shop owner who can put them in touch with someone who makes quilts to sell.
Please let us know how you decide to resolve this. I think we've all been in the same circumstance.