Whenever you take ownership of something someone else had you are taking a risk that the previous owner allowed demons to enter the object. Or that some other bad energy is in the object
I never buy used anything. I tried that once and I had the same heart failure as the person who wore it previously. If I know the person and they are OK then I have no problem with an object. But I don't buy or use anything that I have no idea who had it previously. I would recommend that if you insist buying something used hold it for a few moments and identify how you feel. If OK then you can buy. It could all go south when you get home but it is a method.
Now to clarify. These issues don't affect everyone.
Some people are so spiritually strong that nothing gets to them. I don't mean religious belief. I mean they know who they are and how they live and they aren't changing it even if a demon whispers in their ear. They are not sensitive to the spirit world. I envy them.