I'd first wonder why he put that much money into a gun then turn around and sell...although there could be lots of valid reasons. Second, what is your goal when it comes to the firearms you are considering? Do you have an intended use for a heavy bbl 7 mag? I've been doing some buying/trading with a fairly specific goal in mind for the firearms I want to end up with and would consider haggling (off board) for the 6.8.
Do not trifle in the affairs of dragons, for thou art crunchy and taste good with ketchup.