Just wanted to confirm to you that as new Ranks unlock weekly, the costs to unlock characters and costumes can and will increase.
As you can see they started at 300 Medals, 300 Medals, 600 Medals and 900 Medals, but this is only for Ranks 1 to 4.
From Rank 5 onwards the medal amounts can and will change. I’m still waiting for a full breakdown of the increases and will post these once known.
But just wanted to confirm the medal costs to buy characters/costumes increases at Rank 5, and that this is deliberate and not a glitch.
~ Russian Tigger