2018 GT350 Owners Supplement complete in original box from chassis J2271 purchased new by me and traded for 2019 GT350R which was traded for 2020 GT350R Heritage Edition.
$350. (Natch!)
I also have extra 2018 and 2019 Hard-back 32 page GT350 dealer books, $20; 2018 and 2019 showroom brochures...