What a superb piece of kit! Looks like a lot of engineering for a "simple" product, and so potentially I'd guess it would be expensive, perhaps prohibitively so. Probably couldn't use it in HFT competition as you'd need to be sure the reset delay was long enough to ensure the kill had been witnessed - and then risk having too long a delay and therefore holding up shooting. But absolutely great for club / gallery use and especially for home practice ... provided it is affordable!
Just my thoughts ... and what do I know ... I miss more than I hit anyway