Feedback:User/Musha/ZCoins for Rare Crafting Materials

I would like to be able to purchase rare crafting materials, namely, Ectoplasm, Obsidian, Diamonds, Rubies, Sapphires, Onyx, etc. using my ZCoins. I understand this might be difficult given the ever-fluctuating market price of these items, but a standard could be created. The Heavy Equipment Pack sells for about 60 ectos after being purchased for 15 Gold ZCoins. This equates to be 4 ectos for 1 Gold ZCoin. This seems too good of a deal to me, but something like that could be set up.