For online convenience, especially for those who live out of range of bulk food markets, there is always Honeyville. Flat rate shipping.
If you live in the NY Metro area or just pass through once in awhile, make a point to stopping at the Hunts Point Produce Market in the Bronx.
M-F Before 10am
Many markets with bulk food sections will sell 25lb and 50lb sacks of dry goods directly to you usually at a 10% to 15% discount. For us in the Hudson Valley it is the Mother Earth Storehouse.
Excellent variety of premium organic foods.
Wide variety of organic bulk dried fruits, nuts, and seeds. Easy to navigate website. They offer unique foods that are great for sprouting at an affordable price.
A great source for seeds to sprout. Fast and free shipping on most items. Find them on Amazon.
This website is run by Dutch Valley Foods, out of Myerstown, PA. It is a great source for affordable dry staple goods.
Prepping with long term food storage
Located in Brooklyn, NY, this is an excellent affordable wholesaler of quality organic bulk foods.