I've wanted one of these for a while, but I want a very specific watch.

I want the Navitimer with the all white dial, red markings, and a leather strap.

This is the only one I can find:
https://www.breitling.com/us-en/watches/navitimer/b04-chronograph-gmt-48/AB0441211G1/

It's not available from Breitling anymore.

However, a number of gray market sites on the web seem to have it below Breitling's price:

https://www.swissluxury.com/breitling/ab0441211g1p1.htm
https://www.authenticwatches.com/breitling-navitimer-gmt-ab044121-g783-756p.html

All of these seem super sketch.

Also, 48mm sounds big. Do they make this in the 46 mm size? I like the layout of the chronograph dials as pictured (Rolex Daytona style), not on the side.

Any tips on where to get this watch?