i have to ship some posters for a design competition from the USA to Finland. all the prices i have found are way expensive - FedEx, UPS and DHL are all in the range of $100 - $150 (based on a 36" x 4" x 4" box weighing 2lbs.) the one thing i did find was the US Post Office which looks like they can do it for more in the range of $25-$30. Are there any other options i am not aware of? I am not really worried about speed as they are due in November, but i am worried about reliably tracking its arrival - the USPS has not been great about that in the past. thanks!