http://www.democraticunderground.com/discuss/duboard.php?az=view_all&address=389x9117865Generally if you are paying full retail costs, I think there's no doubt the food banks could stretch the dollars further. They can purchase through surplus programs or what ever other systems they have set up.
But if you are getting the food almost for free, the foodbanks can't stretch beyond that point. And in some cases with the coupons I wasn't even just getting it for free, there were a few items I bought that I made a small profit on - and used that to fund my own groceries. There are a couple ways to pull that off, like shopping at a store that gives coupon overages, so you use $3 in coupons for a $2 item, and the extra dollar is applied toward the rest of your purchase. Or you can spend $2 on items that trigger a $3 register coupon off your next order
Cracking the code on this has helped us save money on our own groceries. Now that I'm looking for food bank deals, I've found crazy ways to reduce my own expenses. If there's an item we use too, I get some for the bank, some for us. And since I started this, I figured out a few items that are always available for free, like toothpaste, deodorant, shampoo, soap. I am done paying for those. What I need is a second food bank on my normal commute path that takes toiletry items - the one I'm donating to only does food.