Who makes the harness bulkhead connectors?

Evans wiring has them: http://www.evanswiring.com/catalog.htm

If I recall, they're about $15 per connector and include the foam gasket in down in the bottom.

From what I saw on the Evans' webpage link, those connectors are $70...I wonder if that is all inclusive of all 3 connectors, plus the firewall plug-in piece. Hopefully, that $70 wasn't just for the items you showed. If so, I think that I''l be pulling out the elec cleaner, wirebrush/sandpaper/emory board & epoxy for my fixes.