Problem with Pricing

Friend of My Dad: I hear you’re getting rid of your spare TV tuner.
Me: Yep.
Friend of My Dad: How much?
Me: No cost.
Friend of My Dad: Then you can’t sell it.
Me: I don’t intend to, I just want to get rid of it.
Friend of My Dad: But you need to charge something, then.
Me: I just want to see it gone.
Friend of My Dad: How about $25?
Me: … sure.

Obscurantism appears to be profitable.