If you look close at a lot of grocery store items these days, you will find they have smaller packages or less quantity inside.
If might be about the same price as a year ago, but there is less in there.
One soft drink bottle (Orange Crush) slimmed down to a taller size, but is actually down from the 20 ounces before to only 16 ounces now.
Those frozen mac and cheese dinners have the same size packaging these days, but inside is only about half full of food.
These are just two examples.