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@killerkea
@larry 2 months and 3 weeks ago when update 1.1.1 came out is when the Eagle cards got reset for some people and started to give us discounts in dojo.
At the time the mastery discount was 7.5% + (.75% * # of completed cards).
I think Rovio changed the formula to slow down the discount after x stamps. I’m guessing around 24-26 stamps the rate slowed from .75 card to something like .5. I think I’m paying 73 per training upgrade and I have 29 stamps. I should be paying 70.75 per upgrade if it stuck to that formula. I’m about to reach 30 stamps so I’ll update this post later when I find out how much it costs me.