Question about GC shiny hunting setup

hey yall, i have the itch to hunt something in Colo/XD for ribbon mastering. Miraculously, I have multiple TVs and Wiis lying around ready to go.

Only thing l need left is the controller, ideally a wavebird setup. For the uninitiated, Wavebirds have the ability to easily connect to multiple dongles enabling simple setup for multi console setups

BUT i dont wanna pay for OEM in this economy. Has anyone found good alternatives for multi console GC setups? I found this https://stoneagegamer.com/retrotime-gc-blueretro-wireless-receiver-for-gamecube.html but im unsure if it will work like I want it to. Cheers!