What are the 5th thru 8th digits of the serial numbers (xxxx5678xxxxx)?
Based on the timings, I'm guessing they're Hynix IC's, but the serial number would help confirm; asking because the IC's used influences the value of the sticks....
Also, do you know how well they clock, or how tight the timings can be run at stock speed/volts? Better clocks/timings at stock volts generally means a premium, how much is variable.
Assuming they're plain-Jane, vanilla sticks, with Hynix CFR IC's (from Spring '12 or later), then I'd value them at around ~$225 shipped.
If they're Hynix BFR IC's, I'd say ~$245-255 shipped.
If they're early CFR IC's, it would range from ~$230 and up depending on their capabilities.
Of course, many people have not had a lot of luck running 8 DIMMs filled with X79, as you know it's very dependent upon the CPU IMC, so just as an act of good faith I'd suggest recommending that any potential buyer try and see if he/she can't borrow a few sticks from a friend to test whether or not their processor can even cope with 8 DIMMs filled; it would also save you troubleshooting headaches that would arise from someone buying them and the sticks not POSTing with their CPU. Just a suggestion, though