Where to buy "already" rooted phone?

Hi, I am just not getting it. Spent money on two phones to see if I can unlock and root them, and it is not my forte! Don't even know where to start because there is just too much information out there when I search online.

Is there anywhere I can just buy a rooted device, or pay someone to do it. Since every search on the Internet leads back to this site I thought I should ask it here. If I am in wrong section please let me know.

Thank you