Should I Buy A Used TiVo Stream?

I am getting ready to buy a TiVo Stream and I am trying to decide if I could get by with a used TiVo Stream. I gather from reading here that one of the risks is getting one that has not been de-activated. I just got a Tivo Mini that was used and I simply called TiVo to de-activate the old information and activate it for me. Would it be the same for a TiVo Stream? Might they have dealt with this differently since I am already a TiVo customer?

I don't mind spending the extra money for a new one if I need to, but if I can safely buy a used one, that is certainly fine with me. What I don't want to do, obliviously, is buy something and find out that I can't use it. I assume that none of the TiVo Streams are tied to a cable TV company like I have read some of the TiVo Minis are.