You're right KittenVal, it's not necessarily a hard and fast rule. Not EVERY $4,000 saddle is going to the best saddle in the world. After all, I've sat in a few Butets that I wouldn't give $5 for and one very hard Devoucoux (although I've sat in about 4 or 5 other Devoucouxs that were as close to saddle heaven as you could get). And not every $500 saddle is going to be crap. "Comfort" is in the 'seat of the beholder'
but I've sat in a ridiculous number of saddles and as a whole I've found that the comfort/quality level of most $2500 and $4000+ saddles are not on the same plane.