A monthly subscription costs $10/month (and the subscription can be terminated at the end of the month)
Some people may pay $15 to avoid the hassle of explicitly canceling the service after one month. Most will probably prefer the $10 option because it appears like a great deal (in comparison with the $15 option). Either way, the service gets more customers than they might with a more simple one-price monthly option
A 1-month-only subscription costs $15.(http://www.awesomenessreminders.com/aboutus.php)
A monthly subscription costs $10/month (and the subscription can be terminated at the end of the month)
Some people may pay $15 to avoid the hassle of explicitly canceling the service after one month. Most will probably prefer the $10 option because it appears like a great deal (in comparison with the $15 option). Either way, the service gets more customers than they might with a more simple one-price monthly option