Do you still get a discount on ranks if you already have one? I ask only because I was messing around on the store, maybe or maybe not considering purchasing Obsidian, when I noticed that there didn't seem to be any sort of discount available.
If you have a rank from one of the earlier versions, you can email [email protected], and submit your username and your opinion on why you should get a discount. And if your meaning is valid, they will respond with a discount-code usable in the shop.