Horrifying. The point about the coffee cup comparison isn't that cups of coffee are the benchmark experience for product pricing; if that were the case, my next root canal would cost $0.20. The point of the coffee cup comparison is marginal utility : the money you spend on an expensive cup of coffee almost certainly has very little utility at the margin, because you are happy to chuck it away for a bad cup of coffee.…
The barrier to entry to create and deliver a software application is extremely low as compared to creating and delivering almost any physical good. The physicality of a thing - especially coffee - ensures that only one instance of it can be used at any time (and it would probably be "used up" during consumption). Creating a new copy has costs (where copying and delivery costs are zero and more than one copy can exist at a time disorienting the supply/demand dynamics, people would always be reluctant to pay for a thing - hence digital piracy).
Software, has no such restrictions and virtually zero delivery costs. That's why RMS always said that charging for the act of software development is right. But charging for copies of the same stuff (and not providing its source) is not - people may talk about intellectual property - but that's a different debate.
When you buy a car, you pay for it - your neighbour with exactly the same model also pays for it. It's also "open-source" (or at least, it used to be) - you can take it apart and figure out how it works. What you might not be able to do is to create the car from scratch (you may not have the tools, materials, expertise etc.). And that's why you pay a hefty sum for it.
The same does not hold true for simple apps - they are easy to put together, the tools to do so are freely available in most cases and the expertise can be gained in a short amount of time. Hence, the $0.99 price tag - because the developer knows it's easy enough to put something together for free - if you had the time.
Note that this does not apply to high-end software where significant amounts of R&D and engineering effort is required - and hence the end-product can't be easily reproduced from scratch. That's why I still feel slightly guilty (and very privileged) when I can download and use Linux for free and browse through its source all I want - economics says it shouldn't be free - but it is.