Why not figure out your order, email them AHEAD OF TIME, i.e, before you order and say "Please quote me shipping costs for this order" and then keep that email, phone quote, etc.
I realize this is days of the internet and no one wants to use the phone anymore, but it only takes a second, most places have 800 numbers if your too cheap and it would have saved a lot of hassle.
That being said, folks have to realize that the days of $8. shipping a 40 lb. case of food coast to coast are LOOOONG gone. The increase in shipping costs has really blown the old paradigm of "I'll order $50. worth every month." That's essentially went the way of the dinosaurs. Most folks are saving up, ordering 1-3X a year with a large enough order to ship either hundred weight UPS or by freight, thereby saving bu koo bucks on shipping.
I'm not taking sides here or any kind of non-sense like that, I'm just saying that shipping isn't cheap anymore. And yes, places that offer "$7. ships any order" just have the shipping costs already built into the price. That's called marketing.
Here's another time where people that didn't dick around for years getting there food storage can smile- you did it when costs were lower for shipping and probably saved a boatload of money. It's gonna get worse on that end, not better.
Why put off till tomorrow what you can do today?