well when I goto mine it was like 5+ bucks for a little gallon size bag and it took 2( needed a 3rd but they only had the 2 that day and not seen it since)

I found baking it kills most the micros in the medium. I am betting they store I got it from purchased a large bag like yours snakesRkewl, and rebagged it with a home printed label and tripled their profit. cause the ziplock bags were low end kind.