Leading Living via eBay the Honey Keeper Stainless Steel Bee Hive Smoker for $12.99 with free shipping. (Amazon charges the same.) That's the lowest price we could find by $6, excluding other eBay vendors. It features a built-in heat shield and perforated aerator.

Update: It's now out of stock at eBay; however, Amazon still offers it for $12.99 with free shipping for Prime members.