Your magazine costs $5 a year to subscribe and $3 on the newsstand.
Advertisers will pay $450 a month per page.
You have 45 subscribers and 10 advertisers.
90 percent of subscribers renew every year.
You sell 1,000 copies a month at 10 newsstands and bookstores.
5 percent of those buyers will become subscribers.
This leads to $10,000 in revenue on the newsstand and 50 new subscribers.