Thanks Chuck. On their website it says $590 for one way trip Cancun to Cozumel.
They are the ones with 3 a day schedule from Playa to Cozumel - marketing here sucks - message them and ask about rates, tell them I was just messaging them, use my name, maybe they'll remember
getting from Cancun to Playa is easy, even in a private taxi - it's the damn ferry