The reason I thought you were interpreting me as no longer giving them away for free was mostly just that since uncommon changes have never happened by this means that the state of the game right now is basically as if the option to buy them never existed in the first place. So I was really confused about where the perceived scarcity of uncommon change opportunities was coming from, mostly, since every other event (or so) tends to allow one.

But yeah, rare and uncommon changes have only been bought once or twice since the start of the game with the old system - and the only one I can specifically remember was requested by me a couple months ago. I'm not actually sure if anyone else has ever actually pursued it prior to then. So this option mostly just exists for if you have a very specific uncommon change request that hasn't come up in events.

As for the rare changes, as I noted in the mod plurk, I've changed the cost of 120 pts to 100 pts.