I know a guy who knows a guy who has quoted decent new Rolex prices, but what does a used Pepsi Rolex go for? And how do you even do that without getting ripped off? Is a dealer the best bet?
Also, dumb question....how do you use the bezel with 24 increments? 60 increments makes sense (and what I'm used to), but 24 increments seems like you're limiting yourself to only hour measurements and not minutes (or seconds).
From what I've seen (online so, grain of salt and all that) somewhere around $7k, give or take. Bob'sWatches supposedly gives a good ballpark. Good breakdown of some what makes particular vintage models popular here: http://www.watchtime.com/blog/fratello-friday-buying-new-vs-vintage-rolex/ and a good breakdown of the GMT here: http://www.gmtmasterhistory.com/gmt-master_ref_6542.html
I have the hour hand set local, with the bezel "home", or triangle at the 12 o'clock position, the second time zone (green hand) is set to GMT, but because the timezone I'm typically interested in is GMT -7, I rotate the bezel 7 clicks clockwise and now the green hand references GMT -7. Feel like I just said "GMT" and not much else in that explanation, hope that makes sense and is what you were looking for. Its my first and only dual time zone watch, so the 24 clicks make sense to me because I'm limited to hour measurements. But yeah, I guess I can't use the bezel to time minutes/seconds elapsed.
@sevenhelmet is that the X-33 Skywalker? Love the old X-33 and its served me well, but the new Skywalker is dirty.