How much this cost in US? And versus what car he compete?

Base price of $54,995 (including $900 destination charge).

Here's an article that confirms it, along with an official GM press release. It also compares the price, HP and torque to 3 other competitors, with the Audi R8 GT being the only other one with a Magnetic Ride suspension (officially known as MagneRide).

www.autoblog.com/2011/11/15/gm-announces-2012-chevrolet-camaro-zl1-specs-pricing-from-54-9/

Ok. Thanks.