Solved
Why are DC reroll costs not equal???
See attached screenshots. Reroll costs for Level 9 one time are 20 another time 40. I did NOT make a reroll so far for neither of them, since I don't have the mats. So why the heck are they not equal???
The first two rerolls cost 20, the next two cost 40. This counter is spread across the whole datacron, it doesn't reset for each level. So if you previously rerolled the level 3 twice, the first time you try to reroll the level 9 it will cost 40.
.png){kind=link}
.png){kind=link}