Regs:
i'd probably go the trademe route myself, if I couldn't get a decent OLED. They have better models in the US than we have here, but still a ways off being decently prices. None of the 4K TVs I tried were any good, most were awful with the content I bought in. I was lucky to find a TH panny gathering dust at an appliance shed when I went looking.... you could try ringing a few places- are you covered by replacement insurance?
I assumed it was market value, but checked policy and it's replacement - which is helps my grief a little I guess