Upgrade from Standard to Super, duration 10 days
Upgrade fee $20, the value of advertising $0.4/click.
$ 0.4 times the 10 ads / day = you earn $4/day.
Duration of 10 days, a total of $40/10 a day
You earn a net $ 20/10 days
Upgrade to Diamond, duration 20 days
Upgrade costs $ 50, the value of advertising $ 0.6/click.
$ 0.6 times the 10 ads/day = you earn $6/day
Duration of 20 days, a total of $120/20 days
You earn a net $70/20.
Upgrade to Golden, duration 30 days
Upgrade costs $ 150, the value of advertising $1.5/click.
$ 1.5 10 ads / day = you earn $15/day
Duration of 30 days, a total of $450/30 days
You earn net $300/30 days
Upgrade to Huge, duration 30 days
Upgrade costs $ 450, the value of advertising $ 6.7 / click.
$ 6.7 times the 10 ads/day = you earn $67/day.
Duration of 30 days, a total of $2.010/30 day
You get net $1.560/30 days.
Upgrade to Lg, duration of 365 days or 1 year
Upgrade costs $ 999, the value of advertising $ 2.8 / click.
$ 2.8 times 10 ads/day = you earn $28/day.
Duration of 30 days, a total of $840/30 days.
For one year you get $840x12 = $ 10.080/year
You earn net $ 9.081/year.