Phantom Fury was listed but they decided not to publish on GOG mere days before release. They thankfully changed their mind a couple of days ago, a bit more than a month after the release.
What’s the point of paying for early access if need to pay again when it’s stable?
Early access users took a gamble of paying a low price for a likely buggy game, that might evolve over time through user’s feedback and that has a possibility of failing and never come out of early access.
Asking for the early access users to buy the game at full price is a slap on the face.