You can buy the Key of Solomon on Amazon.
I highly recommend the Mathers/ Peterson edition of the greater key. The images are crisp, and there is great attention to detail putting all of the seals fully back into Hebrew:
https://www.amazon.com/Key-Solomon-King-Clavicula-Salomonis/dp/1578636086
The lesser key edition I use is the Crowley/Mathers paperback The images are clear, and it is relatively well organized: