I don't want to upset this dealers weird fan club but I think it's a gross and unreasonable markup for one with such a mediocre dial and soft pitted/corroded case, the case back is particularly bad, I could not forgive it. 'Buy the seller' has gone way too far with this particular dealer and the auction vs dealer price discrepancy is probably at an all time high of late so there are good watches to be found for much less if you are willing to put some time into hunting.
Note the watch you posted was discoverable via invaluable and not well hidden when it seemingly got almost no interest and sold for bottom estimate (minor caveat, the invaluable archive is generally reliable but isn't always 100% correct so sometimes you have to check with the auction house directly to verify results)
