The idea isn't as appealing if you don't use gs credit. You will need to spend more than $35 and the money you get back will be on gs credit. With that you have a few options.
1. Take the cash out instead of credit (ripoff imo)
2. Keep the gs credit for future purchases
3. Cash the credit out for a kindle gift card
Yea i dont care if i turn money into credit, because I would either trade in at best buy or gs and convert to amazon, however after tax at GS means id pay 10 less than what I can buy it for from amazon new, just not worth my effort at that point.
Ill just continue to lament the fact that one wont pop up on amazon for 35