We don't sell the hand-helds. We do repair the odd one. But batteries are quite expensive, chargers tend to fail and if they suck up a bit of water they are killed stone dead. Parts are not as plentiful as with other ones either. We have had quite a few with fried circuit boards in them.
Tellingly, the warranty on them is shorter too.
All that just kinda put us off supporting them as a product.
But to be fair, most of our experience is with the early ones like the DC16. Perhaps later ones improved somewhat?