After thirty plus years of working with the public I know enough to know that I haven't seen it all. Someone will come up with something new eventually. At the supermarket where I work, just like every other supermarket on earth, we have shelf tags that compare the price of the store brand to a similar national brand item. They look something like this:
compare our diapers to the
HUGGIES 36ct diapers 18.99
OUR BRAND 36 ct diapers 16.49
YOU SAVE 2.50
You get the idea and I am sure you've seen them before. Yesterday my boss comes up to me laughing and shaking his head in disbelief. In the baby products aisle he had come across a woman who had opened a box of store brand diapers and was pulling one apart. When he asked her what she was doing she pointed to the shelf tag and said she was comparing the two products just as the sign suggested. "And let me tell you" she said."This store brand diaper doesn't stretch nearly as much as the national brand"
If you are in the neighborhood, stop on by. The entertainment is free.