In that they aren't including something "free," you are complaining about the wrong thing. All the examples you gave simply said X% more than something, without any claims of something for free. There ARE products out there that DO say X% Free, but you didn't include those.

Edgar replies: These companies are counting on the fact some hurried shoppers will misunderstand their claim of "40% more" and believe it means this is a bonus pack with extra content free. No one needs a mathematics lesson that a 36 ounce bottle is 50% more than a 24 ounce one. That is there primarily to mislead consumers in my view.