The RZ model came with laminated stock and is relatively scarce…i would put the value at $800.00-1200.00 as i cannot imagine many were made in that caliber, configuration AND laminated stock in the original box with the rings and paperwork, etc. The value is hard to nail down as I am not sure the desirability of the 7MM Mag chambering, depending on how many folks are looking for that variation.
Good luck, i would probably out that on GB (starting at one cent?) and see what happens, you may be pleasantly surprised.