Difficult no, since the mail service is great, they are fast and careful. The main problem would be time or price, as one is directly dependant on the inverse of the other...
On monday I will pricec each option and decide what to do, depending I will just stick with it and buy a new one on the 2nd run...
Brasil has one of the most efficient mail service, its a monopoly of federal government and they use many air lines that are strictly mail.