tough to say- I think you can pretty much classify this as a Custom Essence.
Essentially it's an essence- although it has a custom body shape and the LED's. You just don't see many Essence 6's hitting the market, let alone semi-custom ones. 4 & 5 string Essences have been going anywhere between $1200-nearly $2000 lately on eBay. How much more, if at all, should you expect to pay for a 6?
Add in the custom body shape, the beautiful top and the LED's....it's a guessing game really. How much is it worth to you?
No bids @ $2700.... personally, I wouldn't pay that much for it, but I'm not a six string player. That being said, I wouldn't be surprised to see him get bids and for it to sell for $3K+
It really comes down to whether or not the bass speaks to you. I've owned my share of Fender basses, plus a few G&L's, 2 Tobias', a MM Sterling and I wouldn't trade my used Alembic for any of them. I LOVE the Alembic tone and I'd be surprised if you can find anything built better or that can beat it in terms of playability.