They probably won't sell you a case. I work for a different fast food restaurant, so I know how stuff generally works. When we order food, we get it from a company, and we put the invoice into a computer. From there, whatever products are put in the invoice, a program creates/updates our inventory. When stuff is sold, it decreases how much of that item we have, since we obviously just sold it to someone else. If you wanted a case, they would have to somehow account for a whole case worth's of a certain item being used. Since they give a certain amount of sauce free, then charge for additional cups, to account for it, they either have to sell alot of nuggets (because sauce inventory would decrease with the nugget inventory since they are related items. But then again, haven't been to McD's in ages, so I dunno if they ring up which sauce you pick, or if they ask and just give them to you), or alot of individual sauces. Just FYI.