Today I have called both authorized Apple certified repair centres (one official, one licenced). Official said "We have replacement screen right now, but we need to check in house everything and ask HQ if we can use parts to fix it. Because of mechanical damage and opened device Apple is allowed not just revoke your international warranty, but also ban serial number to not get any authorized service in Apple certified repair places. Our technicians are trained to repair your device and put it back in best condition as they can." But licenced one said "We need to put our hands on it, do initial investigation and after that we should be able to order parts, we are unable to check if we have replacement parts or no right now. Please ship us your device to do our investigation. Also if repair cost will be 1/3 of device price we can refuse to repair and we will suggest you to do documents backup and reupload it on your new device." Of course I went to official Apple shop and asked them about your situation. Answer was almost the same like repair centre, but they said "If repair centre do not have required parts, they are not holding device and technician should inform you via email to ship your device again when they will get replacement part. Current waiting list for iMac Pro parts is 4-6 weeks. We saw hugh demand on replacement screens so waiting time will be longer, maybe 2-3 months. Apple is currently focusing on new devices manufacturing as we know."
I live in Vilnius, Lithuania (Small country near Baltic sea). Of course, If you want to ship it to me to take it to my country Apple repair centre, message me (you have my contacts).