Agreed. If I were going to build a rig solely for mining, I'd get a cheap motherboard and used cards, put it in a milk crate, etc... The $1,000 rig was using a much nicer mobo, SSD and high end power supply. That way I'm getting the components I wanted for my next build instead of just a mining rig.

My computer is on 24/7 much of the time. If I put another card in this one, I'll probably have to upgrade the power supply though. And if I'm gonna buy a new power supply, I might as well just start building a new rig.