It's pretty good to be fair, in my opinion it's probably going to die FAST if they don't add more things to do, because I can see people getting fed-up with it quick. It basically feels like DPD delivery simulator with minor combat (been playing for 4-5 days now came across one other enemy player, and they floated away as soon as they saw me [even though they were in a galeon and I was in a small boi])
Skull Island is pretty cool, feels like a wave zombie survival game and you get a great paycheck from it.
Good game, better with friends, probably not worth £50 right now but potentially in the future.