Classic. Having gone to College de Bois-de-Boulogne, lunch treks to Costco were a common occurence.
Honestly though, not much to say, 1.50$ for a hot-dog and a drink, add 2.40$ fries on top of that, and you get a quick and filling (although not healthy) meal. Best bang for you buck. However, it sometimes does get difficult to get a seat, mostly on evening around 6-7pm when people start going there for cheap meals.