Portable DVD Player

This was a gift I bought for my grandmother for in the car to have during the long car rides we would take going on vacation together. She has gotten better at using her smart phone so now I just put movies on there for her instead. This is a nice little player and it is still basically brand new. She used it maybe a total of about 5 times. We just don't need it and I could use whatever I can get for it instead of letting it sit on a shelf and collect dust. I paid $60 plus tax for it brand new, so I'd like to get at least half of what I bought it for back out so that's about $30. Thanks