Even if you've recently signed up for a special CPQ-enabled Developer Edition org, sign up for new one now. We're always adding new data. Also note that the Salesforce CPQ managed package expires after 90 days, so you may need a new org anyway.
Sign up for a free Developer Edition org with Salesforce CPQ.
Fill out the form. For Email, enter an active email address. For Username, enter a username that looks like an email address and is unique, but it doesn't need to be a valid email account (for example, email@example.com).
After you fill out the form, click Sign me up. A confirmation message appears.
When you receive the activation email (this might take a few minutes), open it and click Verify Account.