I tell people "we" (Our quilt guild) regularily makes quilts for charity and everyone applauds our efforts. No one has ever asked me to make anything for gratis.
I also make and donate a quilt I give to a local Cancer Society for a raffle every other year. This is a quilt I put my heart and soul into as I am a breast cancer survivor. This year my quilt brought in $550.00 and knowing the proceeds go to helping families and patients negotiate their path through this disease fuels my efforts to do even more.