I have bought prequilted fabrics from Melinda's for my Christmas
jam bags for quite a few years. The prices are reasonable and always a little above what I can find at my local Johann's I can get 56 bags out of 7 yards of fabric. They are just big enough for 2 12 ounce jam jars. I often get comments on how cute they are and people also inquire about where I get the unusual fabric. I'm very satisfied or whould not be still doing it at age 80!