Plus size vs regular size clothes

Natasha • Mama to a little boy born 09/18/15
I heard on the radio this morning that women are freaking out because Old Navy charges more for plus size jeans than regular sizes. Personally I don't see a problem with it. If it takes more material to make your clothes, shouldn't you have to pay more?? What are your thoughts? I'm not bashing plus size girls, I just think it's fair.