UPDATE PLEASE READ: I just got some bad news that my private retailer will only ship to USA from now on, he doesn't wanna deal with anything international for some odd reason. I'm sorry for this problem, I just found out right now. Thank god only one person ordered that was international. I'll be PMing everyone who was interested but wasn't located in USA to tell them. I am deeply sorry, USA only. But free shipping of course. Get a dropshipper in USA if you're international. Thank you.
It's because international shipping from the US is rather expensive. USPS had a pretty large price increase, and UPS and fedex costs even more. On top of that, you have to fill out customs declaration forms for every package. Lastly, there is higher risk something would happen to the package, as it will be going through more hands.
I know because I've done mass international shipping before. It really is a pain the ass.