I was about to place an order, but something in the "Terms and Conditions" we're required to agree to upon checkout, made me pause. It *looks* like it's saying that if the carrier loses the package the customer is just out of luck. Are either of the shipping methods insured against packages going missing in transit? (the selection doesn't say).
I don't know anything about Correos, but it has been my experience with UPS that the shipper is responsible for filing insurance claims. Chances are nothing will go wrong, but this seems like quite a lot of risk to ask of a customer.