economy why not thing be cheaper like jp servers

[Reynhart]

Why is there so much inflation in the markets and everything costing so high.

Because the game "creates" gils. The more you play, the more gils you have, the more you'll accept to pay and the more prices will go up.

Let's start with this. If the item is actually selling at a price, then that's what it's worth.

It's also because some people are stupid.
In FFXI and XIV, people have literally bought gear from an NPC, and put it on the market for twice the price. And it sold !