The seller has been spamming that ad all over Craigslist - it came up in the Los Angeles Craigslist as well.
I have seen a LOT of Bradley GT's get re-listed and linger until the owner gives up. Most of them are basket cases that I wouldn't take for free, but ones in decent running shape might be a good start.
I note the ad specifically does not say it is running, so I suspect the batteries are dead. Many of the electric conversions are driven by 6 inch motors, which are useless in a vehicle this size IMO.
I'd take a look at it, and run screaming if it is a basket case - if it rolls and the brakes work and it doesn't look/smell like squirrels have been living in it, I would start at $800, add more if it can actually be test driven, add more if the lead-acid still has life, add more for a 8" or larger motor. With a 9" DC motor and decent controller and "functioning" lead-acid pack and in perfect needs-nothing running shape and current registration, 3k-4k.
-JD