Clearly then you didn't read the article, or even the title. It isn't about monitors but rather TVs. 40" is too small for a 4K TV. $1800 is to expensive.
I'd rather say the article being about wishing that TVs were pure monitors but with an IR sensor and more inputs than a generic monitor.
40" is certainly not too small for any home I've lived in or visited. Besides, the article itself asked for monitors in the range 40" to 60".
As for the Benq, the most expensive price around here translates to about 1400USD. Granted, that's still ~50% more than the asked for 1000USD but that's most likely due to a lack of demand.
If you want a TV that follows the rest of the spec (UHD, >=40", <1000USD, >=4HDMI CEC) then, sadly, it seems like you'll have to live with the woe of a "Smart TV", with its complex remote, such as the Philips 55PUT6400 55" 60Hz (~918USD converted price):
http://www.philips.co.uk/c-p/55PUT6400_12/6000-series-4k-uhd...