Have you actually looked at the size of the package you are getting? Many products have been downsized without lowering the price.
I pretty much buy the same things every other week. Several packages are same size but less contents. Groceries this last week were 8% more than two weeks ago and not as many twofers. One store has now started doing a significant price reduction only if you buy 4 or 5 of the same thing.
That's old. I remember when I was a kid back in the 70s and early 80s reading a journal examining the quirks and foibles of modern society (OK, I admit it, I was reading Mad Magazine) and that has been going on for a long, long time. One piece in an old back issue made fun of the shrinking 5¢ (yes, 5¢) candy bar.
I've been eating a lot more fresh fruits, vegetables and unprocessed meats recently so it is harder to sneak price increases past me because everything is priced per pound.