Not so sure about that.
The price has nothing to do with how quickly the game sells out. The Bug Butcher (4500c) sold out in the blink of an eye, while State of Anarchy (2500c) will likely remain in the shop for months to come. Unless Chrono has raised coin prices across the board, one would expect the 6000c game to be a reasonably high-quality game. And anything remotely good doesn’t last long in the shop, regardless of price.
There are also people sitting on tens of thousands of coins…
thus having the ability to buy every game currently in the shop (including both coming soon games) in one fell swoop.
So you might want to postpone sleeping for a while, just to be safe 