When I talked about “this system” I was talking about the old system (2.0.1 and before).
And I said that because last sunday I checked the gem discount with an envy to give to devs some dollars. But when you have 10k gems to you really need 1.5k? No. So I didn’t give anything. But if my stock was 2k gems, maybe I will have bought something.
Maybe I generalize my case a little bit 
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I also want to give some dollars to support this game but for something that I don’t have like what I already in the past: