Without bothering with someone I'll just leave this here as a comparison:

Using average prices on my server (100s/stacks for ones readily available since it's usually cheaper and nobody got time to buy several thousand of something in singles lol) gil costs (kind of hard to compare the pure timesinks between each but none are too horrible nowadays) to 119 are as follows

Relic: 43.5-45.7 mil depending on which ones.

Mythic: 169.5 mil

Ergon : ~453 mil with another 50k-2mil depending on your lucky with the random delve boss item roulette

Empyrean: 156-222mil depending on which one.

Now mythics and ergons being higher priced kind of make sense (though in ergons case you could certainly argue not that much higher) due to how great and job defining they are. They literally are that much better than say relics at the bottom.

But empyreans are by and large not much better and sometimes not even better than relics but cost ~4-5x as much. In fact half the empyrean weapons cost more the mythics that completely blow them out of the water

If that's not unbalanced I don't know what is