Very very rare this time of the year... This is breeding season for alot of people and there are only a few reasons they would get rid of females right now. Even the pet quality gals can be used as broodies. Right now you are seeing the egg-eaters, the extremely old ones that aren't producing anymore, or sometimes the ones that pull from their growout pens because they aren't good enough. Bet bet right now is to buy a box full of chicks from someone and hope to get a few girls out of the deal. Late fall is when most breeders narrow down on stock and sometimes you can pick up some decent pullets/hens then.