I don't by the smaller amounts as its expensive compared to what I pay for a large bag. However, I do believe tortoisesupply (Tyler) sells smaller bags and most any of the places that sells tortoise stuff or tortoises. I have even seen it at Petco.
Moozillion, if I recall, you are from Louisiana, right?
If so, take this recommendation from a "neighbor" (I live in Mandeville): I bought mine from Lancecham, and my Sully TEARS IT UP! By far his favorite food. Lance is great to deal with, no problem shipping and the product is excellent.