Alas, it looks like it's too late. Their web site has this announcement:

"We regret that after 40 years of providing books and other items to the Irish American community, IRISH BOOKS AND MEDIA is closing its doors.

We cannot fill any more orders."

Even some links on that page are dead.

I did, however, track down Irish on Grand (in St. Paul, Minnesota) and Kennys Bookshop & Art Gallery (in Galway, Ireland).

Links to publishers, in Ireland, still seem to work.