Do most of the "good" monitors have automatic zeroing (i.e., detecting the full state based on accepted current), or is it still mostly manual?
Note, I'm not disputing that a $200 monitor is "worth" it in terms of what you get out of it, but just not worth it in terms of cost of manufacture. Most items today are, at the cheap end, actually priced closer to the cost of manufacturing than what the marginal customer might pay.
It's the same way that I would still pay $10 for a ballpoint pen if that was my only chance, but in the real world they are actually priced at a few cents.