Subscription model can be daily, weekly, bi-weekly or monthly. Specific amount for each modality can be defined. Subscribed user gets certain benefits like low rate for browsing or free browsing, whereas non subscriber has to pay premium price to enjoy the service. For example there is a News service whose subscription fee is BDT 5 for 7 days and browsing fee is BDT 0.20 per minute. Non subscriber can also enjoy the service but browsing charge for them is BDT 2 per minute. If any user listen News service every day in multiple times, it is more economical for him to subscribe the service