Let us talk out of our asses here, just for a moment. People like to call these "thought experiments":
There are two mindsets at play that I can see. Lets call them the "analytical" and the "immediate"...
[Aside: If I use my own terms like this, then I can write that book later and have my movement-terminology ready-to-go ] :)
The "analytical" mindset is willing to spend thought-cycles worrying about the fact that an app is expensive at $2.99, since the price is anchored against a million other <$1.40 apps. The level of cognitive dissonance on display here is uncanny, but apparently price-anchoring is a low-level OS service of the human brain that is difficult to kill via the Task Manager (consciousness).
The "immediate" mindset is completely free of the cares of price anchoring. This usually happens when you're playing with other people's money, or when you simply don't have a choice.
If you build for the "immediate" mindset, you win.
Of course, this is just a thought experiment and completely indefensible. However, I am willing to make a bet that contains elements that are correct.
I had a free version of the app with IAP and a paid version. Both initially cost $0.99 but after 6 months I raised the price to $1.99. Sales actually went up. I think if you have an app people like and you have good reviews, price isn't as important.
Graph for paid app https://www.dropbox.com/s/s7zvicfuan9ci5n/paid.png?m
Graph for IAP https://www.dropbox.com/s/3ddr15si5qp5bux/iap.png?m
As for a higher standard, I want to deliver value regardless of price. At the end of the day people are giving me something way more valuable than a couple dollars - their time.