If someone offers less than posted price, don't haggle. I was chastised by one of their sr. rep. for doing so. They recommend waiting for a full price buyer. I think they are sensitive about becoming an auction. The only other issue is stated condition of your Note9. They are picky about signs of wear. If your start by listing it as "good" you will save yourself a bit over aggravation.
If you agree to express overnight shipping, post the USPS price, which I think is $26.35.
Good luck, I hope it sells as quickly as my 6T.
Fractal Design R5 | Asus Z170 Pro | Intel i5 6600k | 16 GB G.Skill Ripjaws DDR4 2133 | Seasonic 650w PSU | eVGA GTX 550 TI | Samsung 960 M2 500 GB | Samsung 850 EVO 500 GB | ASUS Burner | Windows 7 64-bit