I would have to look at my pricing when I get in tomorrow, but pretty sure I am around $12,000 with tax, ACE, and 36-month financing. Even if you paid cash and was taking a floor model, I don't think you are getting a Flair with ACE for under $10,500 with tax. Every market and dealer is different though, but hoping for $9k is not realistic.
Martinique is a nice hot tub. Not quite as spacious as the Flair though. No option for ACE though and ozone is optional. I'm around $10, 500 with ozone, tax, and 36-month financing. In my opinion, the Flair has better filtration now with the dual filters, flashier lighting, and standard ozone. Build quality is pretty much identical. If you want ACE, its an easy decision. If ACE is not the most important factor, wet test each and see which you prefer. I have sat in both and both fit me well. If it was just for me and the wife, the Martinique is plenty big and has great therapy. If I needed to fit 4+ people, then the Martinique is too small.