I recently posted a post related to the bad, not to mention bad management of the drawn to and from Sardinia by Moby and Corsica Ferries, here you find the complete post
On the facebook pages there are many customers and former clients already declared very unhappy, who try to fight against windmills who do not listen, indeed often close and delete comments.
Then it happens, as often happens, that you know a person and many things are understood, names, numbers are given and a solution can be found. In this case the "person" is OtherConsumption, consumer association. How many of you know the legal advice service? Probably few. What I mean here is not that all those who have found their ferry ticket Genoa - Olbia and back, tripled from one month to the next, I have to sue the shipping companies, but I mean that they can ask for information by speaking as customers to someone who will certainly know listen and advise.
Turning into the place of Altroconsumo I came across just in this post: Increase in ferry prices to Sardinia, better plane more rental car? The post is from February 7, 2011, very current, and compares the tickets of 2011 with those of last year, the price increase is 66% with peaks of 100% a really nice blow - (the increase of the title of 131% refers to data taken from the post that I recommend you read).
Ma there is more, Altroconsumo tried to compare the average expense of a family (2 adults and 2 children) traveling by ferry (with car behind) and by plane (with rental car), I just tell you that in the second case you can save up to 500 € you then make your considerations.
For any specific information contact Altroconsumo, while for personal experiences, in the comments below there is all the place you want:)