https://www.facebook.com/marketplace/item/2606718222978387/
https://www.facebook.com/marketplace/item/181045023351116/
https://www.facebook.com/marketplace/item/1412108119121290/ - not a TU250 but a Boulevard (I think they're called that) with 6 miles on it, 2017 for $1800
They aren't bad bikes, I see the appeal of buying new but for $5100 you could buy a new Honda CRF250L which are more appealing to me.