I would second McMurdo's recommendation of Burnetts & Struth for their $199 CDN casual 4-6yd kilts as a great price and place to start. They do have an irish directed O'Saffron kilt in that grouping, as well as several irish county tartans.

I do have several full 8yd 16oz traditional kilts from Scottishkilts.net and they are great, and a great value, if you can find the tartan you want in one of their discounted tartan collections by Marton Mills Jura or Lochcarron Strome. When you enter their site in the URL search you will be sent now to thier sister site Tartanweb, which carries identical stuff but at a slightly different price than the scottishkilts site did---pretty much the same deals though.

Good luck with your search, and welcome to the kilted world.

jeff