I have one laying around but it is laying around because it's not as convenient as the gang valves you can buy at Petland. They have gang valves that split a pump into six with individual controls built into each connection. I'd check the Petland right near you before you order anything. I got mine there for about $5, probably less.
If you want the manifold for a different reason, you can have mine. I have a plastic and a metal manifold.
LMK
Dom