Thinkpad P1 G6 with locked BIOS

Hey, so I found in my country a listing for a used Lenovo P1 G6 for only 1000 euros with these specs: i7-13700H/64gb/1TB/RTX 2000 Ada 8g. The seller said that the price is low because the BIOS is locked. I am wondering how would that impact me and should I buy it. I will be using it for BIM and CAD work since I am an architect.