You are correct that I left out the fabric which needs to be added in. Again a one time expense, though there are different ways to hook it up, it seems, and if the model fits on one system you may not need it.
You hire people who are employed by the DC, by the hour for DC work. How much work is there to do once it is screwed into the rack?
You also left out the data tech costs- probably at least $50K/individual-year in KC (although I guess I'd just work for free ribs).
If you're putting A100s into celeron motherboards... I don't know what to say. You're not saving money by putting a ferrari engine in a prius.