Have had substantial interest in this.
New 65mm (C.L., B&H etc) is $1030, the 85mm $1720... about $700 difference.
Preowned 65mm avgs. about $750. the 85mm--$1350. About $600 difference.
I'm looking for $550 with trade. Firm.
Excellent optic that offers a ton more usability in low light than the 65mm, and it isn't the pack-beast of the 95mm.