I'm contemplating getting a sony card just to get the 5,000 points and use for my PSN purchases. I didn't see anywhere on the offer, but there's no minimum purchase for that, right? Just within 90 days?
When I got the Sony card the deal they were offering was $50 in PSN credit and a year of Playstation Plus as long as I made a 'qualifying purchase' and linked my PSN account. I bought a $5 game on the Playstation store and that did the trick, but I'm pretty sure you can buy pretty much anything with it.