I've looked at a few Viva/Prima sailings and they are incredibly expensive compared to other NCL ships still. The particular selling matters too... our upcoming 4th of July Alaska cruise fare in a Haven penthouse was 15% more (25% if you count the included airfare on Regent) than a concierge suite on Regent during the same week, but factoring in the extra flying to get to Anchorage (they give you economy on domestic, and my mom won't do that, especially not for a 10 hour travel day) and the fact that I thought maybe we'd bring my niece, the Haven won out.