I think when you have a long time relation with an AD, he can do that.
No need to say that I paid that Watch in 4 or 5 months. And that the Sonata was not, by far, the fist Watch I bought from him.
Sadly, IWC bought his shop, to install their Boutique, some years ago.
But still, I have some Kart Sessions, with him, and we regularly meet, for lunchs, dinners, with our respective families!
Best,
Nicolas