No such animal. The best you can do is to keep watching Ebay for a good used one that is under $400!!! For the life of me, I cannot understand why B&D stopped making such a popular item. We have one of the first Mainship 350's that didn't have the coffemaker nook. We mounted a spacemaker under the cabinet next to the fridge. If the 400 has cabinets there, you could get a newer model Spacemaker which is longer than the original and mount it there. Get a door made and use the old nook for storage space.
Pics of newly update space saver coffee makers installed would be appreciated. I have not been able to find an up to date one for the life of me. I have seen up to date under the counter....but that wont work for me.