I don't think 850 is all that bad for a Colt Combat Commander, but I'd try offering 800 first to see if they'll come down on it a little.
As far as the idiot mark, the great thing about stainless guns is that scratches can easily be polished/buffed out, I carried a Combat Commander for a number of years & occasionally it would start looking a bit shoddy from all of the daily wear & tear I was putting on it, a bit of semi-chrome polish compound would bring the finish right back like new though.
As far as the idiot mark, the great thing about stainless guns is that scratches can easily be polished/buffed out, I carried a Combat Commander for a number of years & occasionally it would start looking a bit shoddy from all of the daily wear & tear I was putting on it, a bit of semi-chrome polish compound would bring the finish right back like new though.