I buy quite a few unique frozen/refrigerated meats etc. online, I find it very difficult to do much better than $50 shipping from FedEx or UPS. Host of suppliers, D’Artaganan, Snake river farms, Creekstone, various Louisiana vendors, fresh rabbit vendor etc. pretty much all the same. Sometimes specials or minimum orders discount shipping.
That said you can often add quite a bit to some orders for the same $50 shipping! So I wait until I can stock up a bit.