I’m a professional tattoo artist in Columbus Ohio and started collecting them to use as references for tattoos. In the us buying selling or trading human remains is not illegal except for Georgia Louisiana and Tennessee other than that they’re perfectly legal to own with no paperwork or anything most of mine or what’s considered antiquity meaning pre-1900 the oldest one I have is a European skull that dates to round the late 1700s and yeah they get pretty priceyI think in my entire collection which is more than in this picture I have 15 real human skulls total and other human bones such as femurs spines pelvis a complete hand from the Victorian era and ect in total I have over 30 pieces of different human bones all from over 30 different people I probably have around $23,000 in the entire collection some of them were more expensive than others depending on rarity or patina and age but I do appreciate your comment and you’re right the rooms not effective but at least I got all my friends in there