Ok fellas, devils advocate here. But so what if they have multiple eBay accounts? So what if they're not a car dealer? It doesn't mean anything bad about the car. So of course go see it yourself if you're interested.
Now to flip it around here is what concerns me.
1. States lack of rust, yet doesn't provide detailed photos of said areas of lack of rust like sills, lower fenders, doors (in and out), battery removed etc.. rear hatch slam panel. List goes on....
2. Says should be an easy road worthy, define easy I say! It looks to have been sitting a while and likely will need new bushings, some rust repair (I'd be surprised if it's as clean as advertised), brakes will likely need work, along with suspension. And just try finding a replacement 240z mirror these days!
3. In my opinion it's had at least 1 respray, that fluted bonnet is the original bonnet that's been modified to fit a later flute (Note position and only 1 side), it does look relatively original and unmolested though, original wheel, gear knob etc.. But the seats were trimmed poorly and it's obviously on 260z wheels with a front spoiler etc..
I do think it is good buying provided it's as rust free as claimed, but I do think it will need some work. Shame about brown. But buy based on condition not colour.