Right, not disputing that. But often there's a list of complicated alcoholic drinks (with fancy ingredients in addition to the alcohol), and another list of complicated non-alcoholic drinks (with fancy ingredients but no alcohol), and the prices for both lists are very close together. So if you're conditioned to see a big difference in price between a vodka soda and a soda soda, you are going to expect that same big difference in price for your fancydrink.
Is this expectation correct? Perhaps not. But it's unsurprising.