(Obligatory chauvinist reply) Yes because women are so SENSITIVE and DELICATE and have to have really fine razor blades...
Okay, now the real reply: I think they make the same kind for men and women, color the women's pink and charge more. But that's just a guess because I've never tried women's razor blades. Also the good razor blades for men are also expensive... usually. You can get cheap ones but they pull at the hair and make little cuts on the face and... bleh.
These though, they are cheap AND give a good shave. You might try them. They fit the Gillette Vector handle (I think that's the name... I'll see if I can look up what handle I got to go with it, but it's a Gillette something.) Lemme know if you want to give them a try and I'll research. If nothing else I can look through my amazon.com purchase history to see what kind of handle I bought.