Shipping from US to Brazil?

Since eBay requires both buyers and sellers to use PayPal, it should be no problem once the money is in your account. I've shipped all over the world with never a problem. As our friends in Canada, Sweden, and elsewhere can attest, shipping can be kind of high but since the buyer is paying the freight, go for it (if what you're selling will fit in a flat rate box and weighs 20 pounds or less, it's not too hateful for the buyer).