Probably not worth the money, tbh. I would only use them infrequently, and mostly for teaching purposes, for med students or jr residents, to try to show what we were doing in a case. That being said, does your program send you to boot camp? If so, you get a skull model at the course. Also, most device company reps are more than happy to get you saw bone models for cervical and lumbar spine. If you wanted a full cervicothoracolumbosacropelvic model, that might be a little more tricky, and costly.