Nobody has money to just throw away, so why do we keep paying exorbitant prices for things that are really worth much less or are unnecessary?

Think about Printer Ink.  Why do you think printers are priced so cheap?  Believe me, the printer companies are more than making up for the price with the ink refills that you're going to have to buy.

Another of the biggest rip-offs is the Hotel Mini-Bar.  If you know you're going to need a candy bar and a coke at 2:00 in the morning, just stop at a convenience store on the way to the hotel and pick up your own snacks!  Way cheaper and probably a better selection.