Scrap rolls are bundled together with 20-40 pieces of fabric from a particular line of fabric. Fabric pieces will vary in the bundle from approximately 5" by 12" to 12" by 15", etc. And some pieces may be even larger. Bundles will vary in price based on number of scrap pieces. Each piece will be different and come from same fabric line.
You will need to add your own fabric for sashings, borders and binding if using Free Pattern. Or use your own pattern.