http://cgi.ebay.com/Alembic-Series-I-Electric-Bass_W0QQitemZ7404977819QQcategoryZ4713QQrdZ1QQcmdZViewItem
 
This bass has been on e-bay before.  If I thought the seller was legit, I would be interested.  He's got good feedback, but it's a private auction - bidders not disclosed.  I'm not sure if this is the same person who posted the bass for auction previously.  I do recollect that the previous auctions were of the 3 day variety, with non-disclosed bidders.  He'll only accept cashier's check or money order.  Only way I'd bid is if there was an escrow option.
 
Beautiful bass though...

Auction was removed by Ebay.   Sounds like your concerns were on the money.

I did post on this early this morning. I recieved an email alert from ebay after asking the seller some questions.  The user id is not legit according to ebay so they pulled the item off ebay. Smelt like a scam from the beginning, the pics and the pricing looked off. Couldn't figure out what was meant by several S2 parts.