Tony,
Free shipping is the hook. Initially, if one were shopping for a smoker and saw $1400 for one of this size, they might look elsewhere (you know what the other analog site is) for similar size at a better price. And they would come up empty handed, and may go so far as to equate a similarly priced but smaller unit as better quality. And we both know that isn't true either. Checking on shipping costs might delay the purchase, or even negate it. But bump the price and charge zero for shipping and that sets the hook (for you non-fishing types, you are all played out, no resistance left, you are definitely buying). The trick is to keep the item's total cost, with free shipping, at or below the competition, and offer more amenities in the bargain. Not always easy. Steve has found a way. And that is why he is successful and his customer base very happy. The busy forum attests to that.
As for model 4 users chiming in, they don't post much. Probably too busy smoking and enjoying the good life. Here's hoping!
Dave