What’s not working? I wager between getting the lenses soldered and this: https://console5.com/store/virtual-boy-cap-kit.html you’ll probably be off to the races
pm me, I have the gba player for the gamecube, could talk about what else you’re looking for!
You won’t get the box or manuals like the older ones, but these are still being made. Believe he 3d-prints the cart so you don’t need to send a donor.
Email richard.hutchinson@dsl.pipex.com, expect 2-3 days for a reply.