Watches are not investments.
You can loose money on a Patek, Rolex or a Breitling. You're not buying stocks or bonds.
Buy a brand new YM or EXII at RRP and try to sell it a few months later, you are going to take a hit and that will easy be $1,000+.
Think of those guys who paid $15,000 for a Milgauss GV, if they sold it today they are going to loose something like $10,000. I ain't seen anyone take that kind of hit with a Breitling