Most "power users" don't think so. But then some people have actually bought them and use them. It does have a lot of restrictions, and there have been many complaints about over-sensitivity and quick battery drain.

I guess it's kinda like manure. Anyone can buy manure, but not everyone has a perfect use for it. For some it's a unwanted byproduct, so they hope to sell it, or find some other means of disposal. So, those sellers need and hope for buyers.

Whether it's "worth buying" is very personal and subjective, something only YOU can determine or decide. For me it might be a worthless POS, However for you it may well be the best thing since peanut-butter.

Jim