^^ True. True.
Shell, you're not jst paying for rarity, but also for the "finish".
The Context Butt, however, is like harvesting fruits before they ripe__ less material [investment/cost] + less spoilage. Just cuz the membrane [w/ potential for shell] was left in, does not mean you're actually getting shell ... with all its most sought-after features & properties.
What it was, was a good marketing ploy to get peeps interested enough to start talking ... & jonesing. ...