I bought mine 2.5y ago before the prices went relentlessly up, and stood at the sidelines in wonder and stupefaction
My personal guesses why the CB suddenly went up in popularity:
1. Versatile watch , can be casual or dressy, many strap options
2. Unusual tantalum case, sized just right at 39mm
3. Blue suddenly becoming a popular color again in the past 3y or so
4. Not too crazily expensive (then)
5. That wonderful dial!
But hey, what do I know... for all I know the price has been driven up by a secret cabal of Journe collectors!