Good news, they are back to 1 Pandora Buck to open them. -- I made a few adjustments.
I fixed the crash the chest did the last few days, instead of buying the key off the vendor stone there is an npc.
The best balance solution I found is: it's still completely random, but has more options to land on spots with Super Dyes.. Because: Everyone likes dyes and they hold their value really well.
First off, in Tier 1, you randomly can land on any, but you have a more likely chance to get a 1 charge super dye, doubling your money (2). This is a solid item and should make you feel better about getting a chance to roll something worth it if you don't hit Tier 2 and 3.
Same in Tier 2 except it's the 10 charge dye. (In this tier there is some items that cost less than the 14 and some that cost more. But this is a good middle ground and a solid Tier 2 item that you can sell off easily if you wish)
Tier 3 - Removed the chance of getting only a 1 mil check from that. Because I don't want anyone going on suicide watch if they roll tier 3 and it says 1 mil.
Also added the chance to roll a 50 charge Superdye on Tier 3. This is also a nice middle man and a very nice reward.
Since keys are sold on vendor, they are not blessed to each player anymore and are not colored.
Hope this helps. Happy hunting.
Thanks!