I'm not a fan of pay to win.
You can drop more money than you'd spend buying a real game.
Or you can still buy a real game like BF3 and still buy the shortcuts. Last I heard that was $40.
That game looks like a mash between UT and Halo.
There's also Planetside 2. MMOFPS, free to play, pay to increase XP multiplier etc.
Latest game on steam like that is Warframe. Seems pretty popular, four player co-op, but buggy, and repetitive.
Then there's Offensive Combat and Quake Live.
Ya know?