come on,they are'nt that hard to find. and even if you can't find them, your LFS should be able to order them in. It's not like the whole spawn comes out males.
I called the pet store, they have a shipment of female Bettas coming in 2 weeks, so its all good dorkfish, what do you have with your bettas? or are they alone?
African Drawf frogs are a good companion with Betta's and they are fun to watch. You just have to feed them some frozen or live blood worms and the Betta's sure enjoy the worms also.