It’s free to downgrade to a lower priced plan at any time. When you choose to downgrade from a paid plan to a lower priced plan, the benefits of your original plan will be available until your remaining quotes are exhausted or you reach your next renewal date. At that point, you will be charged the price of your downgraded monthly plan and your quoting limit will change.
When you downgrade from a paid plan to a free plan you can continue sending quotes on a pay as you go arrangement, where you will be required to pay for each quote you choose to submit. Your downgrade will come into effect when the quotes remaining on your original plan are exhausted or when you reach your next renewal date.