Typically in an LE Coop, you can pick the board and BOM up for around $70 at most. Case is around $15, plus the cost of shipping plus the cost of the cords to attach to the LE. The shipping and cords negate themselves since Minleon would charge for shipping and you still provide your own cords. So DIY = ~$85 vx. Minleon at $159. Course, you also have the fun of soldering and possibly making mistakes with the DIY route, but that's half the fun of this hobby for me! Hope that helps!
Duane