I recently received LG B9 from P&S Electronics. It arrived with carton damage that was tied with package strap, but TV works absolutely fine! However I was unclear with delivery fee, which I don't think was mentioned when placing order for the TV, and they asked me to pay another $170 for shipping fee. I was okay with it as B9 was already cheap enough.
Picture quality wise there isn't significant difference between C8, C9 and CX. The only reason I can think of to get C9/CX over C8 is if you're a gamer. It has better input lag and supports HDMI 2.1 for PS5 & Xbox Series X. In your situation I would rather avoid C9 due to that deal pixel (or ask for cheaper price if possible), and get either C8 or CX.