This is the safest method. Visit the official Avast store. Prices fluctuate, but Avast frequently runs promotions (up to 60% off). You pay via credit card or PayPal, and the license file is emailed to you instantly.
The pursuit of "free" Avast Cleanup Premium license files poses significant security threats: Avast Cleanup Premium License File
If you also need antivirus protection, consider Avast Ultimate. This bundle includes Avast Premium Security, Avast Cleanup Premium, and Avast VPN. The license file you receive covers all three products. This is the safest method
A legitimate Avast Cleanup Premium subscription typically costs between $49.99 and $79.99 per year. For many casual users, paying $80 for a PC cleaner feels excessive when free alternatives like CCleaner (limited) or Windows Disk Cleanup exist. If you also need antivirus protection, consider Avast