If you can't find anything reasonable in the states and are willing to order from Germany, Konsolenkost always has a few: http://www.konsolenkost.de/game-boy/zub … l-adapter/
(you can translate the page by clicking the flags in the top right corner)

I've only ordered one DMG there yet, but it was in great condition and I feel I can recommend them.

I ordered mine from eBay

There was a dude in Florida that had a bunch.

Inversely, CGB link cables are really hard to get here, but DMG ones aren't.

You can use the CGB/MGB form factor cables for DMG, but you need the far less common Adapter plug that came with some of the MGB cables.

Anyway, I have one I can part with. I'll PM you.

Hi all, I'm looking for an original DMG-04 link cable to link two DMGs... can't seem to find one anywhere in the US on google (there are some from ebay.co.uk, but they won't ship to the US). Anyone by any chance selling one, or know where I can get my hands on one? They seem really elusive. Also, does anyone know if the CGB-003 Game Boy Color Link cable will work for DMGs? That one seems a little easier to come by.

Thanks guys!

viio