What makes a good couponer GREAT?
One that practices responsible couponing.
It is always important not to clear the shelf or take more than your fair share. Keep in mind that what may be on the shelf at a store might be all that store has until their next delivery. Some stores replenish stock daily, but most stores only receive trucks weekly or bi-weekly.
If a store is out of an item, ask for a raincheck. Stores may not be able to issue rainchecks on all sales. For example, Walgreens will not issue a raincheck for an item with a Register Reward.
Remember most sale items are cyclical. So, if you missed out on a deal this time, there will always be another deal in the future. Sometimes the deal is better the second time around. There have been plenty of times I did not get a chance to use a coupon with a specific deal and it was to my benefit, because the next time a deal came around matched with that coupon I did even better since I still had the coupon to use.