cheap ferry

[The Foolish Fellow]

http://www.discoverireland.com/gb/ireland-travel-offers/travel-only/product/?fid=9294849

maybe 2 of these , it would still be a good bit cheaper than normal

 

[PaddyTDM]

Check the dates,

They only have 1 more special biker day 15th August

 

[DrFarkoff]

yep like he says

All trips are subject to availability and on sailings specified.