You can use Helium Streamer Premium without Helium Premium.
You can still use Helium (the free version) if you want the tag editing features or other tools that is not available in Helium Streamer.
It is indeed a shame that we are (apparently) no longer able to purchase the Premium version.
Which Premium version do you refer to? Helium or Helium Streamer? Both are available on our site:
Helium. With your help, I was able to obtain the Premium version. Thanks.