With the NFL model of personal seat licenses, fans float most of the cost just to initiate the license. Raiders made ~$600 million from theirs. That does not count the annual fee to renew the license. Although its much lower its still a huge amount of money coming in every summer with those renewals. Denver is one of the toughest tickets to come by and would have no problem raising that kind of money. I have been on the season ticket waitlist for almost 7 years with no end in sight.