& there are all kinds of Facebook coops, mostly for "china cheapies" (alva, kawaii, sunbaby, babyland, baby wizard, coolababy, etc) where you can get them wholesale ($3 for an alva pocket). They are easy to join, it just takes the mail awhile. Sometimes they will do a coop for other baby stuff, too.
Ps. I love these wahm covers--I don't have any but I need to pay attention when she updates next! http://hyenacart.com/stores/rockabyebooty/