I'd say $400/450 for complete working build. If your looking for complete value then you need to piece it out.
-xvalve w/level 10 $180 quick sale $200 waiting
-intelliframe $90 quick $110 waiting
-tac one body $180-220
-rail $80-100
-ccm feedneck $30
-foregrip $50/60
-asa and rail $45-55
I might not be right on the money but I'm close. Hope this helps.