EBay rules state it does not sell illegal items but using one of these devices without a specific radio licence is an offence under the Wireless Telegraphy Act.
More bollocks - they use unlicensed spectrum.
I'm not sure that being an unlicensed spectrum classifies the transmission as 'for general reception'... however, just because you
can receive a transmission, does not mean you
will.
This just in: Ears are illegal because you could use them to listen to a private conversation.