Protip: If you don't like the way the market is, level a crafter and make things.
I moved here the minute Stormblood came out and I have been swimming in money since. Hell, my SO and I moved here at the same time and by the time 4.1 came out he had the cash to buy up three mansions. (But y'know...he didn't...because he's not an asshole. But that's another rant for another day.)
Point is, if you work hard, you get rewarded. That's how things work.