I think the possibility of expensive engine work scared off allot of bidders on the OP example. Also the accident didn't help. $60k - $65k is the fair market value to buy sight unseen IMO.
BAT is a pretty good indicator where the market is for 930s. They have definitely come down in price from their 2015 highs. Also 996 Turbos since they seem to have an example of either one of these models up every week.
https://bringatrailer.com/porsche/930-turbo/