not sure if you can call the daytona thing a wave.. the last release of the SS was over 10 years ago.. rolex knows what they are doing, the supply of those will always be quite limited..
there's really no other watch they keep that limited though i hear the latest iteration green sub is still hard to come by. none the less i found one in the display case at tourneau LV last year. when i told my rolex dealer about that sighting he scolded me for not snap buying it.
as for the GV milgauss.. i mean the watch is ugly, what did you expect?
you'll also see this trend on some AP ROO limited editions (this stuff turned me off the brand completely).. they'll sell over retail soon after release and drop off as the hype dies out (and 50 other LEs come out)