In our area there are stores calleld Grocery Outlet (Rainbow Grocery) that carry foods that may be close to expiration, food that the company is making label/ingredient changes in, etc. I think there are stores like this in almost every city. Ours do not carry dented/damaged and I don't recommend those foods - it's not worth it to take a chance with your health. But you might try something new from one of these discount stores you may decide you like!
I just bought some organic frozen dinners (free range chicken, etc.), for $1.99 each and Wild Salmon and Ahi Tuna dinners for $2.99. I stay away from the canned veg and usually check out dairy, frozen, and fresh veg. Also, they will often have overrun from Costco (like Sam's Club).