I need to migrate Gmail Data for my small business to Google Workspace. Earlier account was a free account and now new ones are the paid mailboxes.

On Google i found this tool called RecoveryTools Gmail Backup Tool but it is costly like a 100$. Their sales team is saying that it is a one time investment as i will need to backup data to follow compliance either ways - and using the GWS's inbuilt tool can be complicated and time consuming. Has anyone has go the software?