With IV and greeks from 1990 is $384.62 apparently: https://datashop.cboe.com/option-quotes-end-of-day-with-calcs https://datashop.cboe.com/option-quotes-end-of

With IV and greeks from 1990 is $384.62 apparently: https://datashop.cboe.com/option-quotes-end-of-day-with-calcs https://datashop.cboe.com/option-quotes-end-of-day-with-calc... Since CBOE is the exchange itself, I'd assume the quality of the data is at least the same as iVolatility, if not better.