Yes! Downloading of paid apps is supported since v2.3, however:

You are only able to download those apps that are bound to the account, you set your archive up with.

You cannot buy apps from within Raccoon. You have to make your purchase either through the web interface or the official Google Play app.

When you buy apps, you are licensed to use the app on your devices on a per account basis. You are not permitted to pass the APK file to anyone else. Please do not use Raccoon as a tool for piracy.

Paid apps commonly perform license checks through the official Google Play app. Don't buy apps that request the com.android.vending.CHECK_LICENSE permission unless you are willing and able to allow this.