In Australia they can be purchased from Gould Genealogy at http://www.gould.com.au/Unlock-the-Past-guides-s/2576.htm
Ebook editions are available from Genealogy eBooks at www.gen-ebooks.com.
In Canada, both Irish Family History Resources Online (2nd ed) and British and Irish Newspapers can be purchased from Global Genealogy at http://globalgenealogy.com/countries/ireland/index.htm. (I believe the other two titles will be available at some stage in the near future, but I am afraid I don't have a timescale on that - if interested, it may be worth enquiring from the company directly).
I may be biased, but if St. Patrick was around, I think he'd be interested - I hope they help...! :)
For details on my genealogy guide books, including A Decade of Irish Centenaries: Researching Ireland 1912-1923, Discover Scottish Church Records (2nd edition), Discover Irish Land Records and Down and Out in Scotland: Researching Ancestral Crisis, please visit http://britishgenes.blogspot.co.uk/p/my-books.html. My Pinterest account is at https://www.pinterest.com/chrismpaton/.