If you are challenged by the need to keep your Kindle purchases on a monthly budget (or to do the same for a family member), why not try a Kindle Gift Certificate each month? Just click here to purchase your Kindle Gift Certificate in whatever amount suits your monthly budget amount, and you’ll know how much you have left to spend just by checking the amount that is open on your gift certificate account at any time during the month. And be sure to reward your frugality by allowing yourself roll-over Kindle dollars!