If your looking FP, on the consumer side, it's always gonna be pricey for the latest HD formats. I'd rather have a great 1080p FP than a crappy 4k.
When I started to get serious about HT, $6k was about the minimum back in 1998, and went up to 30k. Always get the best quality you can afford in any display that is in a main viewing room. I refuse to change out my KURO plasmas.