Let me just say, this a fantastic looking watch and fantastic value as a watch. I wish I had that kind of disposable fun money
But can I point out a potential flaw (might be wrong) in your gold value calculation for those interested in the 'investment' aspect. I think you worked out the weight of the gold based on the pure density, and then did the 75% calculation to bring it down to 18cts. But the 25% that isn't gold doesn't have the same density.
Stainless steel has a density of roughly 8g / cm3; pure gold 19.3g / cm3
18ct gold has a density of 15.3g / cm3 for pink (slightly less for red, slightly more for yellow)
So your 35g of stainless steel would not be 84g of 18ct gold, but 66.9 g of 18 ct gold. And, of course, only 75% of this is solid gold.
So your calculation would go 66.9 g / 31.1 grams per troy oz =2.15 troy oz X 75% gold X 625 USD/troy oz=$1008 worth of gold.
I could be way off - so please say if I've got this wrong.
As I said, even so, I think that's still a good deal and a 'lot of watch' for those that can afford it.
Best of luck guys!