Ordered the four pack (have to share with some brew buddies) of 3000 ml flasks and the total after $15 shipping was $41! Unreal deal!! Big thanks to the OP! If you want the 3000 ml ones instead of the 5000 ml linked in the first post, just paste the product code into the search on the website and change the 5000 part to 3000...Based on the last few posts it looks like shipping charges for two are the same as four in case you want to spread the bargain around a bit.