The $80 figure is accurate.
The $62..or $58...or whatever is one reason why Dean wanted to share the details of his recent purchase. Disney does not publish any information about their repurchasing habits- all information about that comes from hearsay. Some of it is accurate, as people know what their offer was and that Disney chose to repurchase the contract- Some of it is based on assumption.
Dean's experience seems to imply that Disney does these on a case-by-case basis and looks at several factors before making their repurchase decision. I'll assume they look at contract size, currently available points and offered price (possibly current membership status of the purchaser on smaller than 150 point contracts).
Since Disney makes no public statements about these issues, all we can do is surmise based on the information shared by others.
Dean's experience certainly shatters some prior assumptions!
Thanks for the report, Dean!
(... and WELCOME HOME, again!!)