My cost is as follows for two units shipped.
Total price$106+$30 for shipping and paypal. I was told that if you order 3 units that the shipping rate would remain the same price, so check with Nancy to make sure that is still true.
If you get two units one for you and one for your bro and you both like them there is no rule that says you guys can't order more. Not sure if DHL is your only option ask to see if there is a slower option. I think part of the reason why you are debating this is to reduce the shipping chargers per unit, but you should not IMHO by another unit just to knock off the shipping charges. You don't want to pay an additional 53 bucks just so shipping is cheaper. Since you asked I figured I would give you my two cents. If you love the units, then that would be a wise move, but how do you know you will love it until it is in your hands and you are happy?
I'm thinking of going back in a month or two and getting more units. They seem to have a lot of other stuff like RDA, and RTA's that look good too me, if the price is right I plan on getting the black one, the new wood one with the dual bats and some of their tanks and RDA's in one shipment.