Here are the ingredients:
Shrimp, scallop, oyster, clam, Squid, octopus, enriched brine, krill, mysis, grouper, Red Plankton, broccoli, carrots, colliflower, Red Nori, green nori, selco, garlic, Golden pearlsTM (all sizes) DTs oyster eggsTM, nutra rose powder, fresh rotifers, fresh baby brine.
I'm sure you could buy all of these and mix them up cheaper than $20 for 6oz but you would have to make a pretty good size vat of the stuff. Since you don't believe in feeding your corals, the more expensive items in the mix are a waste to you and cheaper food is what would make sense for you.