How to build a $20 47A power supply

[Robl45]

so if i buy this powersupply, it takes a standard desktop power cord is that correct?

And a spare servo connector will jumper the pins, no soldering for that? then i just solder up the servo connector wires correctly or add a switch and solder on my positive and negative and my power supply is ready?

Its not that i don't have the skills, but converting the atx supplies seemed like way too much of a hassle, but this seems really easy to do even with my 3 year old wrapped around my leg while I'm doing it :)