Download the zipped Excel file to price and configure your dream machine. Most of the items are priced from NewEgg.com.
Just update the price as needed, and select the quantity of the item(s) that you want.
NOTE: I have VBA code in the Excel file to show and hide rows. You can choose to disable the macros when you open the Excel file if you wish. The main functionality of the file will still remain in tact. You can use Alt + F11 to view my VBA code to verify that it is non-malicious. It basically just shows/hides rows if their dollar values are $0.