ooh, i love her stuff. the best place for deals is at the showroom seven sample sale. they actually have them at the start of the season, and should be having one soon. the last one was in may so i think it should either be end of august/beginning of september. i'll let you know when i get the postcard in the mail.
showroom seven has a really good selection (i've gotten almost all my orla kiely stuff there) and the prices are really good especially for the non-leather stuff. which is usually under $100 for bags, etc. the leather stuff is a bit pricier like $200+ but i guess with the exchange rate and everything.
also check her site periodically they sometimes have specials sales and stuff.
Dot, I was at the Anthro store in Soho today, and Orla Kiely bags are on sale now for $250. They had this canvas bag in both orange and turquoise, and a laminated one that's not on the web site. HTH!