Could be a scam and could be a fake listing. I wouldn't go anywhere unless I was pretty certain what I was looking for was both there and actually available for sale.
I assume you take precautions when you go look at such things, such as a means of self defense, telling a friend, and bringing another friend with you.
I usually have a UAV flying top cover and I generally insert a security team including sniper and spotter. **OK, kidding about last sentence.