HikkaHost serves one group of people: those who already use Hikka or plan to. For them it takes away the server hassle, which is worth something. Everyone else can skip it, and pricing is only visible inside.
Hikka is a userbot, a program that acts on behalf of your Telegram account and adds modules to it: automatic replies, utilities, extra commands. To keep it running around the clock, it has to live somewhere. Usually that means renting a server and setting everything up by hand.
HikkaHost handles that part for you. It's the official hosting tied to the Hikka project, and you manage it through the bot: open the main menu and follow the buttons. No terminals or config files on your end.
How much hosting costs and whether there's a trial isn't stated in the profile; the terms show up once you start. If something won't launch, there's a support chat, which is also the place to ask about plans before paying.
Keep the obvious in mind: a userbot gets full access to your account. Official hosting is safer than some random one, but only hand over that kind of access to people you trust. Menus and replies are in Russian.
Ketuk salah satu bintang; nilainya bisa diganti kapan saja.