I bought a "real" HSM off of eBay (used, of course) a couple weeks ago but, unfortunately, it's apparently broken and so I need to return it. The price of these things is huuuuuge and that puts them out of reach to all but large companies. I think that Amazon is trying to solve that problem but, yeah, if I had that much to spend I would just buy a couple outright (they'd pay for themselves in a few months, compared to CloudHSM).