*I* am sure not getting any, they bite too.
Mine like the normal run of the mill rats. Well, my own well fed homegrown rats best.
You can buy individual males for much less. I think at a recent show the individual males were like under $10, maybe even as low as $5. Darned memory.
I haven't seen them really advertising any females for sale previous to this, although I am sure that if you contacted them you could get some.
Wolfy