Simple pricing
Commons = 1/2 cost of base play. Minimum 50L
Un-Commons = 2 x (Base play + 10%)
Rares = 3 x (Base play + 10%)
Super Rare = 4 x (Base play + 10%)
Ultra Rare = 5 x (Base play + 10%)
Secrets = 6 x (Base play + 10%)