GameTech has just opened pre-orders on another round of GCDual’s: https://www.game-tech.us/product/gcdual/
The kits cost $125 and are designed for people who’d prefer an internal GCVideo solution, as opposed to an external plug-and-play version. They add an HDMI output to your GameCube (small cut required), as well as add RGB or component video functionality to the existing analog multi-out (adapter required for component output):
#GCDual pre order has started:https://t.co/nNqjZ9Yqr6
— GameTechUS (@GameTechUS) November 21, 2019
