Guitar Center has 6 Alembics for sale. Just go to their used gear page and scroll down and type in Alembic (you might have to check the 'used' box).
https://www.guitarcenter.com/Used?variation=4709112_5373121
Down to five now, that I could see... three Epics, an Exploiter, and a really pretty dark top Persuader, either bocate or cocobolo. (listed at $3750...)