Wireless Headphones...

Has anyone seen a set of wireless headphones cheap? I want a pair for here at work to hook to my laptop. I have to scan like 3.1 million drawings and I am not allowed to have the radio on during the day. But since I am allowed headphones and am pretty close to my laptop I’d like to setup something so I can get some tunes. The simpler/cheaper the better. Anything over $50 and its not worth it to me. Just curious… maybe someone even has a set they dont use??