Less economical — paying $2 for a small pepsi fully drunk is better value than paying $3 for one twice the size, if half is left undrunk (wasted). I like it almost as much as, "anyone who wants to offer a spare couch, I would much rather stay there than in a hotel" — keep it simple, don't waste, operate efficiently and without friction.
Yeah, but it's two pepsis. Then I think a single large one becomes more economical. Less bottle too. And I can return the large bottle but not the small ones.
