New or Used Stairlift?

Quite recently, I read on a forum that a person was asking whether he should buy a used stairlift. Well, considering that stairlifts are mainly manufactured for the safety of people, I think that a new stairlift can be a lot more reliable. Would you help your family member to install a used stairlift or would you rather encourage them to buy a new one so that you would be 100% that it is going to work reliably and nobody will get hurt? So, my personal advice would be to first and foremost consider the safety of what you are buying and if you buy a new stairlift, then you can be sure that it is going to work properly for a long time.