Hello, I'm aware that Premium Crate Keys will be costing anywhere from 200-500 credits when players manage to receive enough. Problem in my opinion is how low ranking many of the items are, I'm talking Factions in particular. Many of the items aren't worth the amount of credits put into buying a key. Instead, you should replace some of the items that can be gotten from the premium crate with much better stuff. Now onto the suggestion.
Replace 64 Enchantment Bottles with 64 Obsidian Replace 32 Obsidian with 64 Diamonds Replace 64 TNT with 16 Creeper Eggs or 64 Golden Apples Replace 3 God Apples with 8 God Apples Replace 20,000 bonus with 40,000 bonus Buff the sword and remove the knockback, maybe make the sword sharpness VI
This is my suggestion and hopefully many will agree with me.