Capitalism basically, it's worth what you're willing to pay for it, if you're not willing to pay for it you don't.
I wouldn't call it shady business so long as you actually get what they're selling, it's just not my business. Plus just imagine the kind of calls these guys get for customer service, when the end user installs some buggy software or virus that impairs or bricks their computer and blames it on THEM.
Because you know that happens.