I'm also from Yugoslavia (Serbia), and would like to order Ready to Grow Mushroom Kit.
I read the rules on our customs site (www.fsc.yu) and the things that worry me the most are:
1) All the packages are X-ray scanned.
2) All the packages are examined for their organoleptic properties, and according to their weight and dimensions, and if the customs officer estimates its value to exceed $100 they are opened and as such are subject to tax and tolls.
Therefore I wonder, can X-ray scanning destroy mushroom spores or mycelium? And, if they open the package what would they make of the content?