If you have an apartment with a small patio, you'll understand. Once you're done with this Notebook Portable Grill, it folds flat for storage. At $70, it's not cheap. However, it's not a lot more than a 18.5" Weber Kettle Grill, although it is 20% smaller in cooking surface.
Of course, there's no Weber grill that folds into something 1.5" thick. Nice.