Here is a link I found on Craigslist for feeder mice, I let them know that we do order sharing fairly often, but they have a great range of mice available now.
http://phoenix.craigslist.org/evl/pet/4523698981.html
1 package of 50 peach fuzzies $20 (comes out to .40 a piece)
1 package of 50 fuzzies $22 (comes out to .44 a piece)
2 packages of 50 weaned (100 total) $37 each pack/ $74 for both packs (comes out to .74 a piece)
1 package of 20 jumbo mice $20 (comes out to 1.00 a piece)