2 Answers
The Market Place will introduce additional cost for A Cloud Guru, so it is understandably that they have disabled it from Cloud Playground.
You can launch a normal instance and follow the two steps to install Inspector agent:
1) wget https://inspector-agent.amazonaws.com/linux/latest/install
2) sudo bash install
You can also click on "Install Agents with Run Command" button for an existing target.
Good luck!
https://docs.aws.amazon.com/inspector/latest/userguide/inspector_installing-uninstalling-agents.html
There are few other options for you.
1) When you search for AMIs, instead of clicking Marketplace, just click community AMIs. There are free community AMIs that can be used. I used ami-00bdca0af4c09f41b in us-east-1 for it.
2)Just create an instance with any AMI, and when attach an IAM role which has the AmazonSSMManagedInstanceCore policy attached. Then go to Systems Manager run command, and execute the AmazonInspector-ManageAWSAgent run command document to install it. –> I hate the systems manager UI though. It is terrible
not sure why this session was tagged that you can practice this in Sandbox