Building your own computer is a lot like raising chickens
 

Building your own computers is about far more than saving money. By the time all is said and done, you often don’t save all that much given the economies of scale that Dell or HP can leverage. I don’t save much over buying my expensive eggs at the store given how much I pay for organic feed, bedding, chicken wire, and other supplies. Building your own computers and raising your own chickens isn’t for everyone. But they’re options worth considering as you look to future rollouts. Or to future omelettes.

http://www.zdnet.com/blog/education/...-chickens/4264