Do you know the round count? You don't have a ton of messages or seller feedback, so maybe post links to other forums that have any seller feedback from your other sales?
I agree if the rifle is excellent that $850 is a great price. The only issue is that lots of guys are going to smaller cartridges with better trajectory and less recoil or the new whizbangs with super flat trajectory and either equal or greater recoil. The venerable -06 is in a bit of an awkward position right now as a result. GLWTS!