The first thing to consider when buying a natural gas grill is its size. Is it big enough so that you can work comfortably? The average gas grill has about 400 square inches of grilling area, which is already decent to work on. Buy bigger if you expect to use your grill for bigger parties.
Also make sure that the natural gas grill you are buying is stable. It should never wobble. Experts likewise suggest that you purchase natural gas grills made of stainless steel. They generally last longer and are more aesthetically pleasant.