Ok, there's two sides to your question.
The answers about a price never being unfair, cheapness and greed being in the eye of the beholder, that's the market today - so deal with it, etc... are at one level.
I think what you are actually asking is why. Which is the other level and I didn't see any answer going deeper than the surface - goods are produced at very low cost today.
So here's my 5 cents on that and this is going to be hugely simplified. No geopolitics, no demographics, no ethics.
Since around the 1950s two things happened: massive increase in money supply, massive decrease in production costs. The first one is inflationary, the second is deflationary. These accelerated around the 70s and then again in the 90s.
The first you see mainly in things like energy and food - those prices have gone up. The cost for extracting oil, or growing corn has not really decreased a lot (at least compared to other activities) but where you used to pay 1$, now you pay 10$ because the money unit has been devalued (money supply went up). The thing with this process is that the creation of money is not distributed equally, hence the relative impact of this is disproportionate. (hence bubbles in sectors associated with finance and the state: education, civil service, medicine)
The second you see very clearly in things like video games, and pretty much everything associated with digital media, informatics, automatic industries. Recently you can even say that prices became lower, but until recently they were kind of stable, which in view of the 1st effect means that in terms of purchasing power they did decrease throughout.
So you have inelastic demand goods raising in price because money is devalued, and you have everything else which is becoming devalued in terms of purchasing power. A videogame used to cost one month food supply, now it costs less than a day.
To wrap it all up, society has adjusted to the second effect (digital media is the dominant cultural driver nowadays) and in effect expects it to be the dominant one (entitlement to low prices and rising consumer expectations on service level, personalization, etc... across the economy) but it certainly feels the first at some subliminal level (it happens slower), which causes anxiety, which reinforces the entitlement and expectation and demand for non fundamental goods.
Does that help? You can already shoot many holes in the above simplifications, so let me stop here.