this chap has a HUGE colleciton of irises. OK, so the site's in Italian, but if you like irises, they are worth looking at,and I've been told it's possible to order them
http://www.principeiris.it/index_2.htm (http://www.principeiris.it/index_2.htm)
Click on SCHEGLI LA TUA IRIS to see the full range
Those are terrific. Incredible number of different ones - and great photos.
I think you have to e-mail for a quote, giving the numbers of the ones you're interested in.
On similar lines have you heard of reblooming Irises? There's a large collection here that I've been mulling over for some time...
http://www.bearded-iris.co.uk/page19.html (http://www.bearded-iris.co.uk/page19.html)