For BP owners in the West/Pacific Northwest, I highly recommend you check out Professional Reptiles for frozen rodents. Prices are even with Big Cheese/RodentPro ($1.25 for small rats, $1.35 for small/medium). Shipping was only $25 to Oregon and included a tracking number. Everything came frozen like a brick with plenty of dry ice to spare. Rats are packaged very nicely and even vacuum sealed! The quality of the product has been great so far. Small rats are averaging about 60g a rat. Haven't started the small/mediums yet but they look to be around 90g. I really like that they have an intermediate small/medium size category.
Anyways, if you're looking to save on shipping to the northwest and looking for a quality frozen rodent dealer, I recommend you check them out. (Haven't seen any feedback on them yet so I figured I'd share my experience!)