Like has been said on here if you buy full retail resale is a killer
But buy well with good discount and its not that bad
I bought a Breitling Crosswind 7 years ago at 37% discount from AD can get more than I paid for it now, its just if you can wait long enough for new prices to rise and second hand follow (slower on Breilting/Omega than Rolex but do get there)
Cheers