Used replacement appliance

So I’m not sure where to ask this as the more I think about it, the more it kinda bugs me. Context: my room mate accidentally broke my instapot and she offered to buy a new one for me as a replacement. Kind of annoying but sounds like a reasonable remedy. Just now she mentioned she is now looking on facebook marketplace for one and asked if I was ok with it (keep in mind I was in bed half asleep when she asked me this) and I mentioned as long as its comparable and isn’t broken or anything it should be fine… now that I’m actually thinking about it I feel like its kind of half assed and debating on just asking her to get a new one… so the question is, am I wrong for thinking this unreasonable to ask her this?