I think you should contact the nearest grain COOP or elevator that handles Purina feed. They can special order for you and my guess is the price will be cheaper.
At the local elevator nearest our place a 50 lb. bag of Purina Aquamax MVP is slightly less than $40. I believe MVP is in line with AM600 in terms of quality and price. BM61.
Thanks for the info. I was kind of expecting $25-30/bag but sounds like the TSC isn't too far above the market rate. I think TSC will discount if you by 5+ bags. I haven't worked out my monthly rate yet but I won't be surprised if 50lbs will last me most of the warm season in my 1/4 acre BG pond.
