I also smoke Nat Sherman's, and I like that they're mostly only found in smoke shops and smaller bodega type shops.
If Lagavulin was sold in a grocery store, it would probably become a bit more common. It's a dumb reason, I know. But, my snobbishness wants to keep it that way. Ron Swanson already did a ton for the brand, though that might be why it's cheaper because they're selling a lot more now.
It's similar to indie bands that I feel like belong to only me before they get huge