CD31 Daytonas in excellent condition have been commanding over $1000 a set in the couple of years that I have been paying attention to their availability and value.
This set also has nearly new 13" tires on them. The Sumi tires are the ones we all "love to hate" but boy the 13" tire "pickins" sure have slimmed down.
There was some talk several weeks (5-7?) ago that this set of Daytonas, which came off of a car that ended up in a car lot in Michigan for sale, were very likey originally a set owned and meticulously restored by either Olerascal or Leszieg.
If I hadn't just got done having a set of CD-58s professionally restored, I would have gone well past $1000 for them.