'Proper' Irish plugs such as Condor and Erinmore are sadly only available in Ireland. Even for one living in the UK they are hideously expensive plus no trader in Ireland will post to the States.
Here we can get Revor, Warrior, Cob Plugs etc for the same price as 50g of pretty much any tobacco blend, alas I'm no great fan of any of those.
Dark Plug (unscented), Kendal Plug, St. James Plug and Full Virginia Plug on the other hand I do love and have a few chunks of each for storing.
Regards,
Jay.