cheapest way to send package to Guatemala

Last year we sent a huge package USPS, BUT it DIDN'T ever arrive. It was lost when it hit customs. I've heard sending packages through the postal system is a roll of the dice. The prices were nice, but if it never gets there whats the point. Now we use DHL. It is very expensive but your package WILL get there. Yes, there are duties. Just mark your package indicating that sender pays duties and they will bill you. Duties on our packages have been based on the value of the content. DHL picked up a package from my house Tuesday around 2pm and it was in Guatemala the next day at noon (delivered the day after that).