This varies, and I tend to go via the U.S. Postal Service because it's the least expensive between them, UPS (which is different) and FedEx. I've been using another Haggadah of similar size and weight to estimate approximate costs with local USPS branches, and they've generally come up with the following for *international* shipment only. (Inside the U.S. is considerably cheaper.) These are international prices:
1 booklet is $7 USD shipping;
4 booklets is $25 USD shipping;
8 booklets is $40 USD shipping;
12 booklets is $63 USD shipping.
... If you don't see your country on the list, please just let me know and I'll update it. If you're concerned about the shipping cost, I've unlocked a PDF-only reward, and I will happily share my experience getting these booklets printed. So long as you find a reliable printer, I bet it costs you similar in retail for a print run of 4-12 copies as it does to buy them from me.