There are 18 results on eBay right now for "ireland rugby jersey puma": If Those results don't suit you, and you can't find one that you want anywhere else, go to ebuyersedge.com set up a saved search for "ireland rugby jersey puma" or whatever it is that you want your keyword or keyword phrase to be. You'd get an e-mail whenever a match is listed on eBay. You can use the category, price, exclude word, etc. filters to narrow down the results that you receive in the e-mails. If you find one that you want listed an auction format, use a sniping service such as hidbid.com to bid for you. It'll bid for you in the last few seconds of the auction, helping to save you money and avoid shill bidding.
Best place to shop would be (They're based in the US as well): Not sure of any local stores as I'm not in the US
You can get both Jerseys on this website for Elverys Sports. Hope this helped.