Need help pricing some Pirelli tires!

Im selling a set of Pirelli 255/35 r20 tires with brand new BMW rims for my parents. I have no idea what a fair price would be though. Any help would be appreciated! Around 5000 miles on the tires EDIT: Here are some pictures! http://ift.tt/2uoAFn8 via /r/cars http://ift.tt/2sro4y8