Monoprice is selling a refurb PS4 A50 set for a pretty good price. I've used the Xbox version and it's pretty nice in terms of comfort and sound quality. I think there is a newer A50 dock version out, so likely that's why this is cheap.
Also, this might be a dice roll, but the Egg has a refurb gen 2 for $60. The picture only shows the headset, so I am not sure what all you get with that deal:
Connect to your console without wires with wireless Kleernet 5.8GHz technology
Fine-tune sound to your liking with three varied EQ modes
Isolate your voice and minimize background noise during chats with the unidirectional microphone
Stay comfortable during long gaming sessions with a lightweight, adjustable design
Store your headset when not in use on the included stand
Compatible with PlayStation 3, PlayStation 4, Windows and Mac