So sorry about that. It's insanely expensive. There is a less expensive option but it can take up to 8 weeks to some countries and does not offer tracking. This didn't seem like the best choice for a Kickstarter project with a deadline right before the holidays.
May I suggest the $10 PDF by email reward or the current Dairy-Free Mozzarella & Ricotta Kit purchased on my Etsy site (before November when I change to the same shipping option as I'm using here). I use the less expensive, not-trackable method there most of the year. Thankfully we don't have many problems. Hope this helps!