Esko occasionally offers a 30-day trial. Search for "Esko Studio trial request" on the official Esko website. You will fill out a form, and a sales representative will send you a temporary download link and a trial license file.
Run the installer and use your license credentials to activate the software within Adobe Illustrator. Licensing Options esko studio download
If you do commercial packaging, the effort to get the official Esko Studio download is worth every minute of trouble. Esko occasionally offers a 30-day trial