My partner wants a wireless TV Headphone

she bought a readers digest franklin [china] tv sound device with 2 headsets.
I told her about real headphones.
will have to get our money back and return this to RD
googling gave me KOSS for $20!! on top 10 reviews.
went to JB Hifi and dicksmith but their headphones were over $100.
newbie in gadgets.
http://www.headphone.com/selection-guide/top-cheap-headphone…
not sure if this will be OK for TV watching, cables [if she goes unwireless] etc.