I don't know what shipping costs they use on their website. On IGG, we were given a flat shipping cost of $40, which I think is similar to what they did for the Pro1 in their store, but it has been a long time. Based only on what they did for the Pro1, they will likely ship from Hong Kong using couriers. I'm in the US and they shipped my Pro1 from HK via FedEx.
But I'm only using past data, I don't know anything specific about the Pro1x, but this is what I expect.