OS X Mavericks has just been released… for free. That means you can get it from the App Store and install it, as long as you already have OS X installed.
So, even if you’re running an hackintosh, you can download it from the App Store and avoid looking for it somewhere else.
But if you try to install it, you’ll find out that it just doesn’t work. It prepares for installation, then reboots on your old system as usual.
This guide will show you how I upgraded my iAtkos ML2 installation to 10.9 Mavericks using vanilla system files. You’ll need a spare USB drive (at least 8Gb). Installing from USB is easier, faster and cheaper (you don’t have to buy a DL-DVD for a one-time use).