Normally $0.99
This is the Free add supported version - which is also listed on the google play store (however google will not let us install it here in Aus - GetJar to the rescue).
GetJar description:
Cut the Rope: Experiments has finally arrived for Android! The game combines the same rope-cutting and monster-feeding action from Cut the Rope, but includes new features and gameplay elements like rope guns, suction cups, rockets, and water!
https://play.google.com/store/apps/details?id=com.zeptolab.ctrexperiments.ads&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS56ZXB0b2xhYi5jdHJleHBlcmltZW50cy5hZHMiXQ..
Isn't this version always free?