Why are platinum watches so expensive?

[KarlS]

We have been told that as Pl is harder than Au that it takes 4x longer to mill the cases and polish etc etc and has more wear & tear on the manufacturing tools blah blah blah. So if Pl and Au was exactly the same price we would have an incremental differential between the two with Pl being the dearest. Just using some useless statistics. In April 2013 (arbitrary choice of year) Platinum was $1500 per oz and Au was $1400.

A). platinum was 7% more expensive than gold.

Move forward to April 2016 we have platinum at $966 and gold at $1400.

A). gold is now 45% more expensive than platinum. The price of platinum has dropped
B). Platinum has dropped 35% in price
C). Gold has dropped 11% in price

So I guess the questions are:

A). Did the raw material decrease in value get passed onto the consumer or just make PM watches now much more lucrative than SS (hence why some SS models are so difficult to find) and thus make the manufacturer greedily richer?
B). Is the price differential / premium between Pl and Au the same or is Pl unexplainable more expensive than gold. Remember by doing nothing platinum watches are now 35% more profitable than 3 years ago!
C). There is no correlation at all as its not priced for metal content but rather the price the market will bare!!

Or are we just happy that by not regulating price with raw material content at least there is some price stability and purchasers are not losing money hand over dust when precious metal prices move!

Or actually it doesn't matter and the only reason I bothered on these mental gymnastics is that I am bored at an airport??