This is a great product for the busy GM. I have recently started a starfinder campaign and I had been feeling rather lost as far as planet creation was concerned. After purchasing the Planetarium for Starfinder pdf, I suddenly had over a 100 pages of ideas that I could incorporate into my story, with detailed background on not only the planet, but species that lived on the planet, along with flora and fauna. I am extremely pleased with my purchase.
In the pdf you get:
10 detailed settings complete with unique monsters and environmental hazards that your players may encounter.
Lots of plot hooks for each setting to help incorporate the planet into your campaign.
More backstory than I would have made for any single setting in my campaign.
While I was initially sceptical of the price, 12 dollars was a fair price in my mind for all of the work that went into creating this product.