the price is usually a question of demand vs. supply. Does the current demand outstrip the supply? I'm guessing not since the price hovers around one cent for a while now.
will the demand increase? I say it will. Slowly. each business accepting ISR will encourage more people to get their free ISR and spend them for goods or services. what can 100 cents buy ATM? that's what one dollar shops are for! make the website do a free delivery of those 100Isr gift items and it's already a start!