Talk:Zhonya's Hourglass/@comment-89.77.85.134-20110106025312/@comment-173.85.13.208-20110106065212

It's actually 20 AP + 5 armor. And in terms of basic items (Needlessly Large Rod and Chain Vest) that's worth 400 gold and 78 gold respectively (478 total). That Zhonya's active at a basic cost of 522 gold.

However, Zhonya's hourglass is not a basic item. It's a very expensive recipe item. The good recipe items usually offer around 150% effectiveness over basic items. With that as your guide, you're sacrificing 783 (522 x 1.5) gold worth of stat boosts (in terms of basic items) for Zhonya's active.