This what I did,
I know a tech who has allot of cables so i asked if i could have them.
The outlet were 10 for 3.49. each outlet i had to break the bridge to make the plug a single unit. bought them at lowes
The boxes were purchased from Habit for Humanity. at 1.90 per box need two per unit.
The only thing i need is the covers which i think i can picked them up at the swap meet.
So far i spend per channel .412 cents per connection.
Having someone who has power cables helped out.