I'm no economicist, but...
Retail usually goes by,
"Whatever the market will bear."
In the news yesterday, they said that 80% of the cash printed in history (American Dollar, FRN) was printed in the past three years.
Inflation certain accounts for high prices. Wages are not adjusted for the same ratio.
So, yes inflation and whatever prices will make the most profit for the companies.....both of those are what sets prices.