Hey dude,
Buying from overseas is totally worth it, you can get amazing deals, and often material you can't find here in South-Africa.
e-bay is reliable, and has lots of good security. I struggle to pay with paypal on ebay though, but with a creditcard it's as easy as 1-2-3.
One of my friends builds his own guitars, and other than wood, he buys everything else from the U.S.A. to Japan, to anywhere else. Never has any trouble, only thing is, that if you choose free shipping(which ebay offers for most items) the shipping time can take up to two months, however, depending on the product, you can pay for speedy delivery and if it's not heavy, it's cheap.
Give it a shot.
Janko