hi apple,
i paid about SGD7k for everything, included ferry, hotels and transfer. without land tour. basically, everything arrange by them, they will come and fetch us to ferry/hotel base on our time we requested. A agent will be allocated to us everyday.
Place included Athens - Meteora - Mykonos - Naxos - Santorini - Athens. Spent 5D4N in Santorini. However, our train from Athens - Meteora we paid by own, but they will run errands for us to get the ticket and pass to us when we reach. And Meteora transfer (like cab etc) not included.