I'm sure there are plenty of old Alembics that could command a $10K price. Having not seen any pics or description of this bass, I think we can reserve comment on the price for the moment.
On the other hand, I will say that this is very inadequate as advertisements for the sale of Alembic basses go. As unique as they tend to be, especially a 70's Series instrument, it takes a lot in the way of description and pictures to offer one for sale and have people know what is being sold. Things like body shape, wood recipe, scale length, any inlay work, etc all factor significantly into the value of an Alembic instrument. They will also determine which of the various people here might be interested.
All that said, if there is nothing unusual about this instrument, you can take the pricing comments to heart. The market seems to be down as well of late, so even those numbers could be high.
Best of luck!