The costs of managing payments by invoice mean we are not able to offer any discount coupons or 2 months free when paying by invoice. If these discounts are important to you then you should pay by debit/credit card in-app. We do however offer discounts for customers who are willing to enter multi-year subscriptions as follows: 2 years – 12.5% discount; 3 years – 25% discount; and 5 years – 40% discount. Where a multi-year subscription is entered into the full fee is paid at the start of the billing period.