According to Wikipedia, he has $2b in wealth [0]. I have no idea whether $900,000 / year is high or low for someone of that net worth.
[0] https://en.wikipedia.org/wiki/Evan_Spiegel#Personal_life
[0] https://en.wikipedia.org/wiki/Evan_Spiegel#Personal_life
http://files.shareholder.com/downloads/AAPL/3444424458x0x921...
http://nypost.com/2016/04/28/facebook-has-spent-14-5m-on-zuc...