Does one exist? Many of the TV chefs have propane grills with a drawer for wood chips. This would make adding a little smoke to grilled foods very easy, I think. I currently use a cast iron wood chip box in my Weber gas grill or simply add some soaked wood chunks on top of the "Flavorizer Bars". This method is just OK and it requires more monitoring than I care to do. These smoker drawers are on high end grills but I'm wondering if they've found their way down market to cheaper (sub $500.00) grills? Any experience using these smoker drawers? Thanks!