I have a bulk lot of 7 untested PSP games. I got rid of my system decades ago and these games have been sitting in storage unused.

What is the best way to sell them? I have no idea if they are still working and I don’t want to end up with an angry customer that I will have to refund. To my understanding listing it as “untested “ does not protect you from refunds. 

Should I just list these as not working, but add a description advising the buyer to consider these games as boxes only and if they work then that is a bonus? 

any suggestions? I literally just want to get rid of them and make a few bucks at the same time.