Not a bargain at retail. Maybe a bargain grey if you are really lucky. Maybe a bargain used, if you are lucky. Last year when I was looking for a discontinued model, there were no real bargains there, used or grey - ended up with a NOS grey that was just about at the watch trends price.
I have quite a few Breiltings. I have never considered them to be bargains - at least not the Navis or Chronomats. Even the HAQs I own were not "bargains". I got some OK'ish deals grey, but even then, they weren't amazing, just OK deals. Only "bargain" deals I've gotten that seemed really good - not Breitling - was an Amazon deal on a Black Lunar Pilot and a grey deal on an Omega '57 (also not cheap, but a relatively great bargain considering how excellent the watch has been).
That said, I like my Breitlings. I love the HAQS and divers with magnetic pushers. The Navi and Chronomat are classics.