Jas. Townsands sells 4 oz. for $5.50
"Tow, or the beaten stalks of the flax plant, is perfect for firemaking, cleaning your gun, or making a granny wig. This 4-oz. bundle of tow comes in a nice 6” x 10” cotton bag."
http://www.townsends.us/linen-tw195-p-1389.html