I picked up a pair of 300s on closeout from Sierra Trading Post a few weeks ago. Unfortunately all they have left is size 7.5 mens, and you need to size up 1/2 size. Zappos has a good selection; I haven't purchased from them but I think a lot of folks on this site have.
EDIT: Lawrence, I'm not recommending the Innov8s for you; they fit my feet snugly (I'd say like a glove, but I've never owned gloves that fit my hands this well) and I take a normal width shoe. I was just mentioning in passing that while I like the Asolos they don't compare _on_my_feet_ to the Innov8s.