Reddit - Potential PayPal Scam

Recently posted a mint PO 39.5 on Reddit. I was contacted by jbdsr8 who said he wanted to buy it and what was my PayPal address. He seemed really focused on my paypal address and final price. He was also very vague and not like someone about to spend $4700 on a watch. After reading a few of the PayPal scams, I ultimately I told them I wasn't comfortable and haven't heard since.