In regards to the title of this decade old topic
AHAHAHAHAHAHAHAHAHAHA. Seriously? For the cost of 4 of those things I could start up a rodent breeding program and have adequate offspring in 2-3 months. And if for some bloody reason in the future I cannot breed rats, I can just spend 100-200 dollars and stock my mini freezer for 6 months.
Why in the heck would I purchase rats from that overpriced place? Seriously, even with only 1 snake, just go to a reptile expo and frozen rodents for 3 months at a time