Hi Cristian,

I don't see why you can't sell to the USA.... I guess the main thing is to make sure you have the different shipping rates for different products all worked out, so people will know how much they'll have to pay in total for your product up front....

Also, to sell overseas you will really need to be able to accept credit cards and/or payments through Paypal.... If you don't have your own merchant account, a service like www.paysystems.com will let you accept credit cards to sell physical products online.

While I haven't looked into products being sold from Spain, I know there are many web stores selling all kinds of Australian products to a worldwide market.... I don't see why you couldn't do it.

I hope that helps!

- Dien Rice