I guess there are other Avalon 4 modules for sale on ebay.
But I would stay away from this particular one. I shipped it to him overnight, 22 hours later he filed a complaint saying that it didn't work right. My guess is that he didn't let the machine thaw out enough, and he may have damaged the unit with condensation;
https://www.google.com/search?q=cold+computer+condensation&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-aIf you buy that unit, and it doesn't work right. Remember, buyer protection protects you against "item received not as described".
So you can send it back to the seller if it doesn't work right, even if the auction says "no refunds".
Just FYI