I just recently subscribed to the Cricut Design Space. I now have access to 560 cartridges. I wanted a list of all the cartridges I had linked and that I can access as a subscription "member" so, I contacted Cricut Support and here's what they said:
Go to www.cricut.com. Sign in. Once you see your name up in the top right corner click on that. In the left margin you see a list of options. Click on "linked cartridges." You'll see the entire list of all the cartridges you've linked and if you're a subscriber the other cartridges that are available to you.
Well, I hope this is helpful!