VirtualBox Mac OS X 10.6.6

I found instructions elsewhere that Mac OS X can be run on Oracle VirtualBox. The instructions say to buy Mac OS X Snow Leopard from a retailer or official channels, which can be had for $39.99. However, if my understanding is correct, this is the "upgrade" price (you can't buy a Mac without OS X, so you either have the current version an older version). Also, I believe the price of the operating system is hardware subsidized - that if Apple sold operating systems independent of hardware, OS X might have to cost more. Also, I think you're only to virtualize Mac OS X Server on VirtualBox and only on Mac hardware, so no Mac OS X client on PC hardware. You need Intel VT-x. These are the instructions:

1) Go to virtualbox.org and download and install the latest version of Oracle VirtualBox.
2) Open VirtualBox, click New, give it a name and select OS Type, select Mac OS X and Mac OS X Server.
3) You can select the defaults (or more) for memory and hard drive. Note, fixed-sized storage is faster but takes up the total drive size on your hard drive regardless of how much space is being used. Finish the Create New Virtual Disk Wizard and the Create New Virtual Machine Wizard.
4) Download the EmpireEFI boot disk (search Google) (optional: also download NawCom boot disk).
5) Change the settings of the OS X Virtual Machine. Select the Virtual Machine and click the Settings button. Under System, uncheck Enable EFI. You can check Enable 3D Acceleration under Display. Click OK.
6) Click Start. For the installation media, select the EmpireEFI ISO. When you see the EmpireEFI boot screen, switch the EmpireEFI media for the Mac OS X media and press F5 (twice if necessary). Select the Mac OS X Install DVD and press Enter.
7) Select the language and click Next. Click Continue. Click Agree.
8) Click Utilities from the menu -> click Disk Utility -> select your disk from the left and click Partition from the middle bar. From Volume Scheme, choose a volume scheme (1 partition), give a name (Macintosh HD), click Apply and click Partition. Click Close.
9) Select the Hard drive and click Install.
10) The installation "fails". Restart and switch the boot media to the EmpireEFI iso again.
11) When the computer reboots, choose to boot to the Hard drive. It boots into Mac OS X, click OK and configure the keyboard. Select your region and Keyboard. Configure your account and time zone.
12) Double-click or open the Empire EFI disk in OS X, double-click Post-Installation, and run the myHack Installer. Run the installation with the defaults (Continue, continue, continue, agree, continue, install...).

To install the OS X update(s), download the full ComboUpdate and run the full download (like MacOSXUpdCombo10.6.6.dmg (if installed, remove SleepEnabler.kext). After the ComboUpdate completes, do NOT restart. Reinstall the Empire EFI. Remove the iso and reboot. Other updates work without individual downloads and without Empire EFI.

Optional portion - reboot to the NawCom iso, select the Macintosh HD and boot into OS X.

Note: You may not be able to copy to ISO (or to DVD DL) the Mac boot DVD DL. Ubuntu will do the trick, and you can use Live CD/DVD for this purpose.