I would not say it is impossible, but you need to look very hard and be at the right place at the right time. Also you need to be very careful as sometimes, when things looks too good to be true....
I know of two lucky person who got Panerai watches at an unbelievable price last year. That 2 instances. One was a PAM00024 for RM8,000 and the best deal so far, PAM00004A for RM25,000.
So, all the best with the hunt.