online wholesale wedding flowers?

My Aunt will be doing the flowers for my wedding.
I've been looking into getting the flowers online from one of the wholesalers. Has anyone had any experiance buying flowers online?
onlinewholesaleflowers.com seems to be the most popular, but morningstarbouquets.com has the incredible prices. HELP!

I can't help you, but this is an interesting topic as I may do the centerpieces to save some $$.