For many consumer items, pricing strategy is negligibly related to production costs, particularly when companies pursue well executed branding strategies.
You can see this most clearly in the car industry, particularly in the old GM model that provided different "brands" at different price points. When companies maintain price discipline with their distributors and retailers, they can create the image of a premium brand that demands a premium price. For many buyers, price is a feature.
I think some knives, like some cars, some watches and many others things, are clearly playing to the luxury market.
I don't think that cars is a good comparison. Yes there are premium brands, but in comparison there were different finish levels, or they were marketed for different countries. I knew a guy with a "half-badge" M-100/F-100 It was an end of year production truck that had some parts changed for sale in Canada probably due to overstock in the US.
Brands like Saturn were fully experimental, so it made sense to keep them under a different brand, as many could only be leased with no buy-out clause.
So yes there is some brand prestige, No one likes it if you point out their Jag has an F-150 power train, or that their Cadillac escalade is a chevy suburban with leather seats. But those are the risks that brands take, some work, some do not. When makers ride on the brand, it very quickly costs them.
Take for example that there was a time where the Chrysler marquee was the premium brand in Canada, while being the budget marquee in the US, (very interesting to see a Chrysler Neon) Where as previously it had been reversed, and Plymouth zigg-zagged through there as well.
The thing is, the prices did reflect what came with those cars, maybe a luxury trim package was only available from the upper tier marquee, but leather electric seats aren't cheap. And as brand perception changed, the so did the "luxury" parts of the vehicles. (Lexus vs. Toyota, Infitiy Vs Nissan etc)
That churn keeps customers in the same brand family (even if some people didn't think they were related, got a lot of really angry customers that insisted GMC sucked while Chevrolet was the bees knees)
Does my wife's honda jazz count as a luxury car because it has more features than a Bentley from twenty years ago? Not at all, because brand identity is a constantly shifting target. There has to be some level of product there to justify the price.
Watches it may be the case, but watches are also really simple to compare, how long does it last, how accurate is it. Done. Cars have much more social cache.
Unless you can think of a premium car brand that is doing well, and is just floating on its "brand" I can't.