Here's what i think you should do. Find someone on the boards to help configure a system, buy all the parts, put it together, install all drivers, os, software. Test it out pretty good, do oc'ing if you want it. Then you and the person building for you can agree on a price for labor, ect,(do this first though
) and offer assistance whenever needed. Ship it back if something fails or help with RMAing something. Even if the builder is greedy, it will still end up being cheaper by a decent margin.