Yes, the Shell cards were part of the GGWU and I got enough. My friend asked for a Vitamix as a gift. I needed a new Garmin. And my wife shops at Marshalls and TJMaxx and goes to Starbucks. Everything was covered.
Dan might dispute the "value" of gift points vs "retail value" but I still look at it this way: I'll be filling my gas tank, giving a gift, shopping at Marshalls, and my wife will be drinking Starbucks all for no out of pocket expense.