[Arran]

 I would wait a few months and go back and make an offer, the boobs pretty much blew their best chance of selling that cone speaker when they sold you the radio without it, it's unlikely that anyone would hand over $195 for something that is now basically useless for anything other than an ornament. Those speakers turn up with great regularity on fleabay for less then half that, to say nothing of swap meets.
Regards
Arran