Instruct: Classify Amazon reviews into positive or negative sentiment
Query: No point in buying this card online

The purpose of these cards is to allow people to pay cash for game time. Since you can't pay with cash on Amazon, that defeats the whole purpose. If you're going to buy game time online use PlayNC, it's the same price or cheaper, and you don't have to wait for delivery (or pay extra to have it sooner). If you don't want to use a credit card go find these card in retail outlets.