(On the other hand, if he's not riding it or getting old or whatever, he might apply a "going to a fine home and enthusiastic rider" discount.)

Definitely check it out, you might get a pleasant surprise. I'm in that "getting older" category & have applied just such a discount several times. When I was thinning my collection preparatory to moving, I even had a "buy one get one free" policy. This always surprised & pleased the young folks and I knew the bikes would be ridden for a long time. Don