They apologized on the first page for the confusion on the order screen. I doubt they will apologize for drawing a mock box to help sell the product as it is a common practice and there is no need to apologize for how a company does business. It's their company.
A simple "Please know that you will not get a box with your order but rather a paper envelope." would keep others from expecting the same thing though.
The more I've thought about this the funnier it has become. At first I thought very much that it was deliberate false advertising. Now I don't think so as much as it was non-deliberate false advertising. They did not go through the trouble of drawing a false box complete with the logos that accompany normal ones. Rather it was a normal practice to do this so it was no trouble at all.
Still hilarious. Every time I imagine a fan finally receiving their game after a week or so of excitement and they get an envelope. lol!
I love these games as much as I loved Christmas oh so many years ago and the excitement is about the same. Imagine Christmas morning finally being able to open those presents under the Christmas Tree and there's a bunch of envelopes!

Too funny. I know, I'm pathetic and shouldn't get so excited over games, but it's who I am.
I also imagine the day I go to BestBuy and in the games section there are dozens of paper envelopes with magic marker drawn titles.