Early in our marriage we used ground turkey instead of ground beef because it was what we could afford. It was in no way healthier in that it had 16-20 grams of fat per serving. But it was always $.99 a pound.
I discovered that WalMart is now carrying rolls of Honeysuckle White Fresh ground turkey 93/7 for $1.87/lb everyday! 8 grams of fat per serving. No additives. Substituting this for lean ground beef saves us dollars per meal. I'll admit that the taste is more mild and the texture finer, but we like it.
I've also been running out of spices recently. I went to the dollar store and found nothing I needed, so I went ahead and bought Kroger brand for $2.50 and up. However while going through the aisles at CVS the other day I discovered that they have a large selection of spices for $.99. Of course I saw all of the ones that I had purchased recently. I know what I'm going to be getting as fillers on my next order:)