I got an UPS account and decent negotiated rates. Shipping a small package (1-2 DAVEGAs) to the USA is now around 33 USD. It was ~56 USD before.
UPS is now enabled for all location with a real-time shipping cost calculation. There have a been a few hiccups with the Czech Post lately so I hope that more people will now use the UPS.
Some locations (like Canada) are still very expensive to ship to with UPS so I’m keeping the Czech Post as an alternative. It may be slow and quirky but it’s still only 15 USD flat world wide. Plus, the route to the post office is quite a pleasant walk and the ladies there already know me and let me drop off the packages without waiting the line. 
