A dull expensive knife cuts worse than a sharp cheap knife.
And so it goes.
When we decide that the cost of something is directly related to its performance we can easily be taken advantage of.
I think the real key here is value. How well does it perform? Of course, there's more to life than simply performance—looks, feel, and quality are not to be ignored. But, in the end, if we invest in quality high value products that feature performance over bling and flash, we wind up with far more musical satisfaction.
I am not recommending you go cheap, but I am also not a fan of paying extra for leather trim and fancy plating unless it fits together as one high performance beauty.
If the price tag is the biggest variable between unit A and B, it might make you lose sleep over choosing the one that sonically outperforms, but in the end, you'll be happier.