As far as I can tell that LG is a "HDR" monitor with an IPS panel and no local dimming backlight. I don't really see the point in calling it "HDR" then. (Well, I do see the point from a marketing perspective
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)
FALD backlighting (which is necessary to get meaningful HDR from an IPS panel) is actually a significant cost. Just look at the price of TV models without it compared to TVs that feature it.
Of course, the current lack of competition still keeps prices higher than they would need to be, but unlike high framerate support FALD actually does cause a significant increase in product cost.
This is my biggest issue with many Freesync displays. The G-sync module seems to be better at tuning the overdrive impulse across color transitions at all refresh rates.
With the prices on the latest Bugatti I lost interest in driving a car.