Coupon's for A+ Grader Ads are one of the best and most affordable tools for gaining customers. Share the coupon code with friends, family or even everyone on social media. Coupons are one of the most affordable options with the longer the expiry date the more affordable per day. More people see and purchase these Ads because of the deal they get, time restriction to use the coupon and also depending on how much you advertise your coupon / upload. While posting Ads on Gumtree is free, making it have a coupon costs a small fee but is a great tool to increase sales.