AKG shifter pulled out of a SpecE30. These are going for $375 these days, call it >$400 with tax and shipping. Mine is $275 shipped to continental US.
Happiness is no slop in your shift linkage and only a tunnel mount shifter can approach that. All standard shifters use the shift carrier group which adds 3 points of movement.
Note that this is the tall knob. AKG also makes a short knob.