If catheter ablation and implanted ICD don't work, you may need this surgery.

To determine the efficacy and safety of ablation (catheter and surgical) in people with non-paroxysmal (persistent or long-standing persistent) atrial fibrillation compared to antiarrhythmic drugs.

I am not sure how much they charge for the patented radio frequency ablation catheter that they use in the renal vessels and the impulse generator.