Sony wants to make the promotion as simple as possible. This is why after you finish your purchase you are not forced to register an account or to fill in any form.
Sony’s Playstation Store promotion is limited to $20 per user. A $200 order will give the same bonus amount as a $100 order. Sony’s promotion is not aimed at encouraging users to buy in big quantities but to gather as many customers as possible.
This promotion has a perfect timing as Sony now brings games to its Playstation store at their launch. Instead of buying a game from a real-life store such as BestBuy we can now buy it directly online with a few clicks on our favorite game controller.