I've seen quite a few on etsy, and The Container Store has some more structured options (not vintage though but cute).
Farmhouse Wares carries a few, though they are not very large.http://www.farmhousewares.com/vintagestylefarmhousewirebaskets.aspx
Hi-check out Brook Farm General Store in Brooklyn.Can't wait to explore your site more!
Did you check out etsy? I have seen great ones there.
been seeing a lot pop up at Home Goods—different styles, shapes and sizes, but still wire—