Board Thread:Game Discussion/@comment-9204520-20130621190525/@comment-10479663-20130621223656

Sorry Decadent, your math is wrong : (

If you buy all 6 tiers, you actually only have a 20.89% chance of having gotten an R5 card. It is not as simple as just adding up the % as you did.

If you buy a 7th you have a 32.78% chance of having drawn an R5

at 8 - a 42.85%

and at 9 - a 51.42%

Fast forward to 19th - a 90.44% chance that you would have drawn at least 1 R5

Then we know at 20, they break it and just give it to you, and at 21 I think they give you both forms.