If you pay 5$ - you will receive all files in the future, which will cost 5$. The next version of the game will immediately go into early access. It will be available in Early Access for $10 for players for 1-2 weeks. After that, it will cost $5. If you want to get the game at the time of release (early access) - then pay $10. If you are willing to wait 1-2 weeks after the release, then pay $5. I hope I explained clearly :)