Guiar Center is advertising the following used item:
USED ALEMBIC ORION 5STR FRETLESS NAT BUBINGA TOP WC 9 440 02111
The best way I found to follow GC is to go to their used area (http://used.guitarcenter.com/usedgear/index.cfm%20target=_blank) and search Alembic with no other criteria... they happen to have two at this time. A 5 string fretless Epic in MI and the 5 string fretless Orion in TX.
Hey I do that search too! Im about to take a field trip to grand rapids and play that bass. So let me know if anyone wants me to take notes or get info. I've never played much fretless but if there is a good kind of fretless it's an Alembic