If you have been following the jailbreaking phenomenon for several years, then you probably know that the vulnerabilities discovered for iOS they sell for exorbitant amounts. The New York Times confirms which I only knew as a rumor, because a company specialized in selling these vulnerabilities would have bought a zero day exploit for iOS (which offers total access to the system) for the sum of 500.000 dollars. Globally, there are many companies of this kind, which buy exploits for various operating systems and then sell them to the governments of many countries, which are interested in obtaining such exploits in order to use them for the purpose of gathering information.
Apple still has no such program, but its vulnerabilities are some of the most coveted. In one case, a zero-day exploit in Apple's iOS operating system sold for $500,000, according to two people briefed on the sale.
Hackers who develop jailbreak solutions have often had conflicting discussions about the opportunity to sell vulnerabilities for iOS, but for now it seems that some are also kept for iDevice owners, but I'm sure that quite a few have been sold for hard money to various companies.
