In this audio series, as one expert says, it’s the “absolute jewel” of California water banking. : In this episode of “Priceless,” amid an historic megadrought, staff writers Chloe Sorvino and Michela Tindera explain how Forbes determines the value of a billionaire-owned water bank. SOUNDBITE OF ARCHIVAL COMMERCIAL, STEPHEN COLBERT: Hello, America. The folks at Wonderful Pistachios have asked me to help sell their product. TINDERA: He's sitting at sort of a prestigious-looking wooden desk.