If you look on their site, you'll see it's called cashback. That means they are being paid by a webhosting company for new customers, and return some of that money to you. It's all about marketing, if it's true.
I looked for the company you referred to on the web, and find they seem to be spamming forums lately. And I read a warning to never trust companies that don't tell you where are they located. But that, of course, is up to you.
Help, my PC with Windows 10 won't shut down properly
Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?