Thank you Joules. This is very kind of you. I appreciate that very much!
I checked again and Rockauto.com is selling Energy Suspension boots. They ship via FedEx for 10 Euros to Germany, which is a fair price.
Thank you Simon, problem is, Pantera ball joints are dimensionally unusually huge (18x42). and I could not find them here, except for Ferrari 308 boots, which are, well, totally overpriced...
Happy to hear from you if you know a replacement part and where to order in Europe.