hp12c

Are any measurements possible - distance from the back of the carrier, angle of the grind, depth of the grind, width of the grind TIA

I am trying to get this in the correct forum - so mods feel free to move this.. I am looking for a Benelli 11260 - M1 S90 Tac, 18.5, PG, RS, Chokes I have seen a few on auctionarms, gunbroker, gunsamerica that are asking $850+ I have seen report on this site of more like $700 Any thoughts? TIA