trading for rank upgrades or other shop items can be hard, more so if the amounts start to get big. try trading for 15 euro or more and you have to get very lucky to find a seller what we need is a 1 euro token that is linked to your account and can be traded in any server. this way you can save up buying 1 euro shop tokens and once you have enough of them buy your rank upgrade or key or whatever it is you were saving up for. i don't know how hard it would be to implement something like this, but it seems to me that it would not only benefit the players , but also Guildcraft. look at all the android games with their micro transactions, 1 or 2 euro is a lot faster spent than 150 for a rank .
Sounds like a really good idea to me, I was thinking of something similar for getting myself God, then ended up buying something else since I didn't have enough money or time to save up for it. Perhaps having it as a thing you could buy in the shop and it provides you with a coupon code which you can redeem later, that'd definitely be cool. +1 from me!