I got a freeby AutoCAD 14, the boss had a buddy at AutoDesk who sent him a copy which he gave to me.
Computers don't last forever and eventually it refused to work under Windows 7 on a 64 bit machine.
It was probably fixable but I bought ProgeCAD instead, got the dongle so I can use it at my desk and in the workshop.
The only learning curve was recognising the new icons on the tool bars.
Would be nice if I could figure out how to get relative co-ordinates when I drag an endpoint but no complaints from me, it's a bargain at the price.