No way would it approach the price of a new one. A new Series I is at least $10K at the most aggressive dealer discount levels. $500-600 will usually get you a power supply and cable, less if you find a good used deal or construct it yourself. That leaves an awful lot of budget for repairs or tweaking the bass itself before you get to the cost of new.
One definite with Alembic instruments, though, is that there are a lot of unique pieces out there. The top on this one is a bit unusual and I can't say I've seen another like it. If you love it, this is the only one. Alembic might find you another piece of wood that is close, maybe better, maybe worse, but this one is unique. For some artists, that's enough to go after it, even if it's a bit more overall cost than a typical instrument of the same type.
-bob