Registering Used Prusa Core One?

I have a chance to purchase a Core One from an associate which would save me a little cash and allow him to purchase a H2Ds. Question is will I be able to switch registration and ownership? If not I might wait and buy new. Allot is happening right now in the consumer 3D printing market. Would it pay to wait? The savings is not allot and I know I will require some tech support at least until I have made my first successful prints. I would not want to be stuck with an expensive paperweight. I have no explanation for why he wants an H2Ds but it’s a big decision.