As far as I know there is not, mostly because they can get more money out of you based on certain parts. I'll leave a link to some of the most popular pre-built PC companies. Just to tell you in advance most pre-built services will charge you an extra $500 or so depending on which company.
https://www.originpc.com/
http://www.digitalstorm.com/
http://www.cyberpowerpc.com/
http://www.xidax.com/
http://www.ibuypower.com/
https://www.maingear.com/
http://www.xoticpc.com/
https://www.pugetsystems.com/