1) Please visit https://www.audiodeluxe.com/products/waves-custom-upgrade and click on MAKE OFFER.
2) Enter the Price you want to pay for the upgrade.
3) In the comment section please provide the REQUIRED INFORMATION shown below:
The EXACT Waves Upgrade you want, from XXX product(s) to XXX product - if you'd like to upgrade from everything available in your Waves account please type "ALL"
Supply your Waves Account User ID (NOT your password)
Supply your Waves Account Registered Email