You see, the Gamer Gift Card gives you $5 off a $20 or higher game. All you do is buy the gift card, put a few bucks on it and use it to slash a quarter of the price off any $20 game. Pretty easy, huh?
And with the recent news of Konami releasing more classic shooters, picking Gradius up will just get you all the more ready.
[Via Cheapassgamer - Registration required]