Was it a USB or twin 3.5mm plug version?
Twin 3.5mm with single jack connector/adaptor. If it was USB I'd have advertised it as the USB edition.
As aforementioned, tried it on my mates PS4 and it works fine.
Definitely not bothering with eBay after this. What ****** me off is people who are too lazy and ignorant to buy something without doing initial background research, let alone sending me a question about it.