Actually, according to the serial number, this is an 1984 Electrum. Alembic allows one to customize just about anything and this one does, indeed, have an Exploiter-shaped body. It also appears to have an elborate tremolo, similar to a Floyd Rose. Given the low quality of the photo, I can't tell if it appears stock or aftermarket. Unless you run into someone who really wants the tremolo, it will likely make the guitar a little more difficult to sell. I think in the $2000-2500 range is not unreasonable. When it comes to Alembics both the Blue Book and the Vintage Guitar Guide are essentially useless.
Bill, the guitar one