Board Thread:The Quarters - Q & A/@comment-49.195.185.130-20180802003029/@comment-25085701-20181026203048

The thing that I do with my Rewards is anytime I cash one in, I add more to the cost of it. So "Treat Myself to Chinese Food"  started at 10 the first time, went to 15 the second time, and 30 the time after that because I was trying to cut back a little...you get the picture. I adjusted the value based on how easy it was to get to the next level, so to speak, and if I found I hadn't treated myself to that for awhile, I dropped it until it was doable again.

It's not automatic, of course, but one of the other things you could do is adjust it based on how much Gold you have, so it might cost you 1/2 your current gold, or 3/4ths, because if your party does a lot of quests, you get a lot of extra gold you might not know what to do with.