Rhodes - Marmaris ferry

[south coast hero]

Need a bit of help from some members please.Some good friends of ours are hoping to travel from Rhodes to Marmaris where we will meet them and they will stay in Icmeler for one night before returning the next day.
We think they can do this for 65 euros each plus £10 turkey visa each ?
Is there just one ferry operator and is there any negotiation on the price ?
They will be booking from Rhodes.
Any help will be great.

South Coast Hero

[icmeler14]

This was on the marmaris info site
http://www.marmarisinfo.com/rhodes/index.php

[south coast hero]

This was on the marmaris info site
http://www.marmarisinfo.com/rhodes/index.php

Thanks icmeler 14 that site priced 65 euros so maybe fixed price.
Once again thank you.