The Pride Go-Go Elite is a portable travel scooter, and battery "sulfation" is a very common failure mode for AGM batteries when they sit partially charged, are stored long-term, or are repeatedly undercharged. In most cases, replacing the batteries is the correct "repair," and it's often well under the threshold-especially if the scooter's motor, controller, and frame are in good condition.
Also evaluate the charger: a weak or incorrect charger can shorten battery life and make a new set fail early. Replacement of the whole scooter is usually only justified if you also have controller faults, damaged wiring, or a worn drivetrain that causes poor hill performance even with new batteries.
If the scooter is near the end of its useful life, consider whether upgrading to lithium options (when supported) will reduce future battery replacement cycles. For reliability, keep a regular charging routine and avoid storing AGM batteries in a deeply discharged state.