I would go for crowns because its better than a sub. The reason is because it unlocks areas forever unlike a sub when it runs out, you lose everything. It takes 60,000 crowns to unlock the whole game with every area. Thats the $80 package online or $120 using gift cards. But its worth it since you don't have to keep paying every month or $60 every year. Once you unlock it, you keep it forever. Plus every world is just 10,000 crowns ($20). So if there is a new one, you can buy it.
Now the reason non-members cannot go to krok is because that is the free trail limit. If KI did give it free then it wouldn't be fair to those who payed for it. Plus they lose money. To me, only letting players get to triton avenue is a good business idea. If they just let the game be free then they would get no money and then the game gets shut down. But I do wish that there was one day when non members can visit every world like a tour. That way, they know what they are paying for.