YES !
You can gift a Gab Pro Subscription to a friend. 
You may upgrade your Gab friend to become a new Pro user, or extend their current subscription.
Your friend will receive a Gab Pro badge on their bio and other great features. 
Get started here :
https://pro.gab.com/ 

Click "Connect with gab" to sign in, using your gab user name and password.   
Click the 'Upgrade' button.  
Select your payment option: Gab Pay, e-check, check/money order or bitcoin.  (USD or bitcoin only)

Complete your billing information.  In the Note section below, enter the account name of the gabber.

*Please follow up with an email to [email protected], including your friend's gab account @name to ensure proper routing.  For a USD check/money order, include a note with your check.

Gab's payment processing address 
Gab AI, Inc.
P.O. Box 441
Clarks Summit, PA  18411