I see, but that website is clearly biased as they're trying to sell their product. Also, they don't even use correct math which makes me even more certain they're just making up numbers. They mention that other places cost $1/minute, and they claim that half of that cost is $3.33/hr. ???
I believe you had a lapse in reading comprehension.
> To add it all up, an untrained captioner could easily spend eight to ten times the length of a video to create a timed caption file. Let’s call it 9X on average, meaning that each minute of video takes nine minutes for this beginner to caption.
$1 / min of video * 1/2 = $0.50 / min of video
1 min of video = 9 min of transcription time
$0.50 / 9 min of transcription time = $3.33 / hour of transcription time
And a 10x increase is still large, although perhaps not prohibitively large.