I'll bet you Apple will offer a "return/update" service for the gold watches. You send your watch in, and they replace it with a new one for the offset cost. Most of the value comes from the gold so returning the gold and then the upgrade and handling fee would make sense - ahhh somewhat.
Also, I think the idea of a Gold Apple watch is against the company philosophy. It's not something I could have seen Jobs ever agreeing with, even if people want it - The whole idea behind the company has always been affordable lux and high quality for the average person. Oh well, let's see where things go.
and then you find out the new one has less gold and you got stung