I'm recently calculating my rewards if it is worth playing in the silver league with 2 Days rentals.
As you can see the total amount of my rentals is rounded of to 1132 DEC which is around 80 cents based on coingecko. So I will be playing 3 focuses. For the first reward, I got 50 cents which is already more than half of the total DEC that I spent for the silver league. Not considering potions and merits, I was just able to get 20 cents which is a little lower than my rentals.
On the next focuses (until my rentals expire), I still need to get at least 60 cents worth of cards and dec to break even.
I will be observing again if the silver league is good or I should advance to the next league.