Great, but...
The Amazon Gift Cards are great and fun. I would have rated it 5 Stars exept for one thing. They cover whatever comes up in your account next. I was given a $75 card as a gift to by Kindle books.  I also have an auto mmontly shipment of coffee (auto paid by credit card). The gift card was applied to the coffee and when I ordered abot $30 worth of books the gift card was gone and I ended up buying books at cost by cc.  I would not have bought all those books if I thought the gift card was used.  I realize the net cash was the same but I found it annoying.
Rating: 4 stars