Wheat is Cheap!!!
The cheapest place I have found to get whole wheat in bulk is at an LDS dry pack cannery. You can go to providentliving.org to find an LDS dry pack cannery near you. Wheat at the LDS cannery can be found for:
hard white wheat: 5.80 for 25 pounds
hard red wheat: 6.35 for 25 pounds
AND IT LASTS FOR 30 YEARS!!!
Now compound this with the fact that 8 C of whole wheat makes approximately 12 cups of flour.
Compare that to the prices you pay for white flour...hmmm nothing like paying more for less!!!