Quote Originally Posted by mattp169 View Post
really then tell us how
the approximate costs are

11-12 250m coins
10-11 125m
9-10 75m
8-9 38m
7-8 19m
6-7 9m
5-6 5m
4-5 2.5m
3-4 1.25m
2-3 750k
1-2 375k

so a level 12 rune is about 525m coins start to finish

How can you do it for 300m without synergy
Cost of a lvl 12 Rune after averaging with 6 was 497M coins. It may be a little different for everyone but that was the average I got. I've spent a lot of time working out the math of this game.