The price of a house.
I mean, really ?
Can you think of anything else you buy, where the price has no basis in reality of what it cost to build ?

any food or drink sold at the movies

I often think some food is overly expensive.
Particularly meat.
Lots of things are unnecessarily messy too ! Some have been mentioned already.
Phones; phone plans; Internet pricing before you even think about wifi or 4G.in some places!

Smartphones.

Phone plans

Medication here in England is cheap.We get screwed on gas prices.

Where im living.. car insurance 🙄

Space Shuttles

Food at movie theatres !

Property taxes

printer ink

water

Diamonds

I wish games for my playstation was less

stuff to eat at the movies

A really good moisturizer.

video games

Housing.

Hotdogs! LOL 🌭