Look around for tickets as we got a single way for 250B but if you buy your ticket at the pier it will definitely cost you 300B.
There are 4 times for the ferry. Check out the blurry picture. This was taken at the pier, so the price shows all times as 300B
The ferry was direct and a little smaller than the ferry from Phuket to KPP. It was an easy ride.
When you arrive in Krabi it's easy to get a bus or a taxi into town. My friend and I stayed at Ao Nang Beach area, the taxi was 400B total and it took about 20 mins.