While I am bummed I just wasted a header image of Chow Yun-fat burning a hundred dollar bill to light a cigarette, nevertheless I have good news for you big spenders on the PlayStation Network. Though you might want to hold some purchases off for the next couple weeks.
If you manage to spend $100 on the PlayStation Network between June 9 and June 20 (E3 is tucked in the middle of that range somewhere), you'll be credited with a gratis $15. The deal is open to the USA, Canada, and Mexico.
Two things to note: 1) You can only get one $15 credit, so don't go and spend $200, $300, or even $400, and 2) the $15 credit expires July 18, so don't go and sit on that piggy bank for too long. Buy yourself something nice. Or buy me Nier: Automata. It's crazy (and a huge missed opportunity) that you can't straight gift games over PSN still.