If it's an option for you, you might want to consider a different web hosting provider, since this charge is entirely imposed by the hosting provider, and there are literally dozens of hosting providers that provide certificates via Let's Encrypt and other CAs at no charge at all.
Whether or not your current hosting provider is using Let's Encrypt certificates, the $9-$216 charges that you're seeing listed in your interface aren't imposed by us, collected by us, or mandated by us. Our certificates always cost $0, at least from our end.