so i was thinking of a in game curency called monbux so you get them from defeating bro-mons
common = 10
uncommon = 30
rare = 50
legendary = 100
mithic = 200
bro-mon = 500
and can buy items
pixel elixar cost 5
spinach1 cost 10
spinach2 cost 20
spinach3 cost 50
booboo bandige cost 3
and you can evolve them
200 to evolve them
so this is what they look like