I think this is pretty much standard, I try not to watch fats go on the all you can eat salad bar because they will purchase the smallest bowl and then fill up at least half a dozen containers of ranch dressing, it's pretty disgusting how greedy then can get with anything high calorie.  Some of them even ask for a bag to take home dressing cups.  You seriously cannot afford to buy a bottle at the market? Oh, they are also so messy and splatter the dressing everywhere.