From the retail prices one can only assume that some of Hikari's formulas must be a lot higher quality, and cost a lot more to make, than others. That or their marketing dept has created that illusion.
From Big Al's website .....
All of the following prices are based on
8.8 oz bags.
Staple - $5.29
Gold - $7.29
Bio-Gold - $12.99
Food Sticks - $19.29
Algae Wafers - $12.99
Seaweed Extreme Wafers - $22.99
The last one really made me chuckle, as though seaweed meal is some kind of uber expensive raw ingredient. lol
mopani - have you checked the retail prices on Cobalt foods? That should be quite the wake up call for anyone that is considering that food & that feeds larger fish in larger quantities. 8lb's cost $187.99 on Big Al's website, and the 3rd ingredient listed by dry weight in the formulas that I looked at is freakin soybean meal! WTF? And for that they want $500.00 if one buys it in a 30 lb bulk box.

That's $200 more than 30 lb's of a premium food that doesn't contain any soybean meal, or corn starch.
Dr Foster & Smith have the 8lb pails on sale for $125.89 (probably because they are not moving) but even at those prices their food is still a LOT more than some of the other premium brands out there.
http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=24005
Ingredients
Salmon Fish Meal, Wheat Flour, Dehulled Soybean Meal, Brewer's Yeast, Corn Starch, Freeze Dried Plankton, Freeze Dried Krill, Dry Spirulina Algae, Dried Yeast, Natural Astaxanthin, Lecithin, Fish Oil, Vitamin A Acetate, Vitamin D-3 Supplement, Vitamin B1 Supplement, Vitamin B-12 Supplement, Biotin, Dried Brine Shrimp, Dried Kelp, Beta-Glucan, Spray Dried Egg, Garlic Powder, Earthworm Powder, L-Ascorbyl-2-Polyphosphate (source of stabilized Vitamin C), Calcium Carbonate, Vitamin E Supplement, D1 Calcium Pantothenate, Niacin, D-Biotin, Riboflavin, Thiamine Mononitrate, Menadione Sodium Bisulfite Complex, Pyridoxine Hydrochloride, Folic Acid, Dried Bacillus subtilis Fermentation Product, Dried Bacillus licheniformis Fermentation Product, Methionine and Natural Coloring.
Enjoy your free samples while they last! lol