Existing AutoCAD 2011 for Windows users can do a zero x upgrade to AutoCAD 2011 for Mac for a nominal fee. I asked Noah Cole of Autodesk what that fee was. He replied, “$400“.
Since a full license of AutoCAD for Mac is $4000, I guess Autodesk figures that 10% is a nominal fee for Mac owners.
The $400 nominal fee is for AutoCAD 2011 customers who are not on subscription. For subscription customers the fee is only $200.