IMO, a game price shouldn't be about how many hours of gameplay it provides...

$30 for a mobile clicker game just seems too much to me. I don't think it holds so much value.

NES games were a lot harder to and took more time to produce (we're talking writing the game in assembly for a lot of them) and had less effective tools at producing content than we have today.

You also had to assembly the cartridge and transport it to the retails. Hardware was not as cheap as today (nor was transport I believe).

Compare that to your 2017 mobile game which can be distributed via internet (very cheap), produced at a high level language, and you can make in less than 2 weeks with less than 4 people.