Chaotic Goo enters with three +1/+1 counters on it. At the beginning of your upkeep, you may flip a coin. If you win the flip, put a +1/+1 counter on Chaotic Goo. If you lose the flip, remove a +1/+1 counter from Chaotic Goo.
Near Mint - $1.50
Lightly Played - $1.25
Moderately Played - $1.25
Heavily Played - $1.00
Damaged - $0.75
Near Mint Non-English - $1.50
Lightly Played Non-English - $1.25
Moderately Played Non-English - $1.25
Heavily Played Non-English - $1.00
Damaged Non-English - $0.75