With each new grilling season comes an onslaught of propane barbecue manufacturers flaunting their product over everyone else's. When shopping for a propane barbecue you should pay attention the barbecue's construction. Ask the salesman if the barbecue made of cast aluminum, sheet metal, cast iron or the most durable metal - stainless steel. Barbecues made with stainless steel burners, cooking grates and carts are your most durable, weather-proof and rust-proof option; however stainless steel costs about twice as much as cast iron or brass equipment. Remember, when shopping for a barbecue you want a fair price but you also want a grill that will last longer then one season. A quality cast iron barbecue is priced at approximately $350 online; whereas a stainless steel barbecue can cost upwards of $6,000 online.