If you own the standard version of any of our DESKTOP plugins, you can upgrade to the PROFESSIONAL version for the difference in what you paid for your version and the PRO version. In most cases this will be $100. You will see your price displayed while logged into our Store.
Once you own a standard DESKTOP version, if ever confused by the upgrade price you can log out of our Store and see the price for those who do not own the standard version.
Also, when you own a professional license of either BIAS Amp or BIAS FX, you will get a $20 discount for another professional license.