There's definitely a market. I'm going with friends on a cruise this summer and we all just paid about this much from various cities. It's a once a year trip so it's worth it to us to just spend what we need to be comfortable. The way I look at it is Premium Economy was about $2K less. It's worth it to me $1K each way extra to have the better seat -- ie, I'm only spending $2K more than I otherwise would have anyway, not $5-6K.