Yes, I looked too at the HD web site, at the gas grills/smokers. Pretty poor, they have lots more at the HD stores around here, than on their web site.
Maybe try to find the best price "shipped" to your door on the Internet. Or, try to find a store in your area that sells them, then wait for them to "clearance" it out for Christmas.
Or, look into either the Weber Smokey Mountain (WSM) or Great Outdoors (GO) upright smokers. The WSM is literally a winner, competitions are won with this smoker. The GO smokers are at Wall Mart here, both in charcoal/wood fired and gas fired versions. People are modding the charcoal GO smoker for better/longer charcoal burn.
There's tons of info on the WSM on the Internet, at least one web site devoted to it.
Just some thoughts, good luck!