You start with only 1 workbench. You can unlock the second one at Lvl. 3 and the third one at Lvl. 8. Yeah but why should I buy then? 3D Mark. You'll need to run 3D Mark on this machine. And the other machine too. And the other one. AND ANOTHER ONE. I'd say 85% of the machines you pick up, you have to run 3D Mark on it for testing purposes, and the test takes around a minute, plus installation and restart times (around 15 seconds). If you don't have other workbenches, you'll have to sit and wait, and that's not fun.