I am sometimes interested, but I learnt the hard way that more expensive is not a good measure for better. In other words, it's often really hard to find out wh

I am sometimes interested, but I learnt the hard way that more expensive is not a good measure for better. In other words, it's often really hard to find out which product is better even when I'm perfectly OK with paying more for higher quality. That's the problem called "lack of perfect information", and that's something I totally see being abused to death by advertisers/businessmen.