The listing is vague when it comes to the voltage of these units, but the one image shows a 120v station. Since they were almost certainly used at one location, I'd bet that they are all 120v units.
Also, there are 6 bases and 6 holders, but only 5 irons. So really, a group would only want to split these between 5 people. Maybe the one without an iron could be sold at a discount to someone who is willing to source their own iron.
Oh, and international shipping would probably run between $40-60 for one unit.