it doesn't really cost much more to make larger clothes, and appealing to a plus size crowd and getting their $$$ is more important to them than charging a couple of extra dollars, because they are still making a ton of money off of hams. i used to work for a brand in pitt that made some 'exclusively for modcloth' designs and the amount it cost to make huge stuff is negligible considering how much they overcharge for stuff that's, for the most part, made overseas. the garments cost them like $4-$15 each and then they charge $40-100 for them. i recently bought the 'breathtaking tiger lilies' skirt in xs. it said it would fit a 23-24 inch waist. mine is 25 but it says the skirt runs large and to size down. the xs was FALLING OFF MY BODY. it comes with a useless belt. i could step into it and pull it over my body without having to stretch the waistband until i got to my bust. so when i see comments from fats like, 'this runs small!' i'm always baffled.