This search of "metaphysics" at B&N does bring up what seems to be a majority of technical philosophy books, such as by Heidegger, but also some religion, and I see one on "Tarot." Glancing over the titles reminds me that to the extent I would have been in this section of B&N in the past I would have found the titles to give off a very "bad vibe." I would likely have lumped it all in as abstract nonsense that always in the past kept me from spending more time with philosophy.
So Eikadistes I'm not sure that statistically speaking the aura of being labeled like alchemy is justified, but practically speaking I sense you are correct (again, at least in the USA and among "normal people.")
https://www.barnesandnoble.com/s/metaphysics?Nrpp=20&Ns=P_Sales_Rank%7C0&page=8
Edit: the results at Amazon are more clearly weighted toward the alchemy side of things.
Edit2: thinking further about the book titles, i suspect the term "metaphysics" might also evoke in the mind of many people the very negative "obsolete/ancient/medieval physics."