[Peachcreek]

Try a few different distributors. For supplements like flaxseed or lecithin try a natural foods wholesaler. I don't know if they are national, but on the west coast there is Mountain People Distributing. Any large meat wholesaler will give you pack size and unit costs on meat products in your area. For vitamin and nutritional suppliments try either a wholesale animal food dealer, or health food distributor. Out west we have several big chains like CalRanch, Cenex and Big R that sell nutrient supplements to ranchers, including some of the things you need, so they must order from somewhere. They don't keep cows in Central Park, do they?
Good luck.