Nikola, I am not an employee of STP and I think your question should be one they can easily answer for you. They are very prompt in responding to emails or call into their 800 number. So, I am not sure if they had a size 43 and I am sorry that I can't give you an estimate for shipping to Europe. Good Luck!
An EU 43 is generally equivalent to a US size 9. International shipping information can be viewed here: https://www.sierratradingpost.com/lp2/international-orders/