I am writing you today as a long time reader of your great magazine.
You can also use The Builds
listed in the back of the magazine. Each month they usually provide 3 builds from 4 different configurations:
As far as I can tell, all the components are current and should be readily available. In fact, in the most recent issue (February 2014), they had to replace some components because they had been discontinued.
Hope this helps.
On a side note, I believe the prices for the budget and baseline builds have been creeping up with each adjustment. For the Budget build that is definitely going in the wrong direction. In the past the Baseline hovered around $1,100 but in the most recent edition it was priced at $1,230. In my opinion, the budget and baseline should have hard caps at $700 and $1,000, respectively. And that price includes an OS (Win 7 or 8.1).