Am I Being Unreasonable? Original Owner Wants Car Back

I usually tell everyone the same when they ask about a car that I have and it's not for sale.... "everything is for sale at the right price! What's your offer, we'll see if you like it better than me??"
A friend has a '69 Charger R/T that was originally Sunfire Yellow with a black top, tail stripe, and interior. It' a 4-speed Track Pack car that's now black with no vinyl or stripes--just how he bought it in 1986. He's since installed a 492-inch stroker and a 6-speed. When people hassle him that he should restore it he tells them, "Pay my price and you can do whatever you want with it." Nobody has ever asked him for an actual dollar amount.