Shipping is the key. I use Redwolf Airsoft in HK if I am going to buy 3 or more items. For 1 item the shipping rates negates any savings from a US dealer. Also, if you can combine an order they use to give you wholesale prices on orders of $1000. (which is about 3 AEG's w/extras)
I am not sure if this is changed, but Redwolf had a nice way of putting a temp cover over the trademarks, but there was always the risk of siezure.
For small items don't forget to check ebay. You have to be very careful of the el cheapo's and dig through a lot of crap, but there are good deals.

What are you doing with a gun in space?