Hey Katt! Which specific site are you talking about?
If it is Astro.com, personally I think it’s definitely one of the best sites out there on Astrology. They have many pro and respected astrologers working for them.
If you want to learn more about astrology or if you need to have all of the transit insights available everyday, it might be worth it. But it will depend entirely on your personal finances. 100 dollars could be a lot for some people, but on the other hand, it’s just 8 dollars a month.
Regarding the interpretations I think it depends but it can give you amazing insights about your current transits. I suggest you check their policy on refunds or free trials, and try it out for yourself!