So, I have acquired some Chocolate Malt O Meal via various methods. One is this web site that my brother-in-law sent to me. I ordered 4 boxes, and even with shipping it was around the same as it used to cost in the store.
Then, when we drove out to Tool, TX to pick up some used plastic drums to use in our vegetable oil filtering, we stopped at a Brookshires there and they had it! Apparently it is still in some rural areas, just not urban areas like ours.