Where can I find the cheapest ferry between France and Ireland?

Question

I am looking for a ferry for two foot passengers between France (Northern) and Ireland (Southern, if possible). All the ferries seem to cater to people with cars and such, and it is very difficult to find the price for two foot passengers.
Any experience with these ferries, or do you know how much it costs?
We will have the Eurail discount.

Answer 1

Hi Carl,

I found that site,
http://www.irishferries.com/

Regards