You ship the client work. The RLS layer gets audited by someone who does nothing else — and you get a cut, a safer delivery, and a line for your proposals.
You introduce a paying audit (Spot Check or Full), you get 20% the day it clears. No cap, tracked per client.
Audits you resell to your clients as part of your delivery: 30% off list, you set your own margin.
A one-paragraph scope line + the runnable RLS proof to include in client proposals — security diligence your competitors don't have.