Dongle Emulator For Safenet How Can I Download Cubase For Mac?

How can i download Cubase for mac? - dongle emulator for safenet

Hello, How do I get Cubase for Mac? My friend told me not to get too far for Cubase SX3, but how? I searched online, but is only available SX2, but not by a dongle emulator or something. Can someone help me please?

Thanks
PS I can not afford to buy nor new, but I will buy in the future.