Just a thought, but when I need to make a rodent order, I will place an ad on Craigslist.org.  That way 2 or 3 of us can split the shipping.  I usually place the order with my money and when the product comes in, I have them pay me for the product and their share of the shipping.  So far it's gone very well.  If, for some reason or another, a person should back out of their obligation, I have the product and can sell it to recoup my loss. Hopefully that doesn't happen, but so far so good. :shrugs:
Wayne