Preposterous! Absolutely preposterous! We all know there's no such thing as haunted toy statues. That's why I say the seller should instead focus on any painting recently acquired. Most likely, a velvet Elvis.
Seriously, I think the seller is either highly suggestible (but less so than family members, apparently), or is preying on or hoping for someone else highly suggestible to purchase the item at a much higher than usual price (unfortunately, I've read enough about the supernatural/paranormal to believe it could actually be either). I've got the feeling that one of two things will occur for the buyer: 1. absolutely nothing, or 2. absolutely nothing but ordinary as well as unrelated things are interpreted as supernatural events and blamed on poor Maul, meanwhile velvet Elvis set the toaster on fire.