Depends on the shape of the bike. Good shape and good running, probably a decent deal around here. Great shape, great running, a pretty good deal. But the real question is what is it worth to you?? If you want an old bike and like that model, great. If you aren't particularly interested in that particular bike, you might either pass on the deal or swap, get $1,400 cash, and try to locate a collector or EVO racer that might give you a little more than you paid. Life is a crap shoot and these decisions are never cut and dried.
The thing I've noticed on this site and others in the past few years, is that the sellers of older bikes (at least around here) are usually in no way in agreement with what most people who post believe the value of an older bike really is. Sellers keep overpricing their bikes and most times eventually sell them.
When I bought my old elsinore, I paid $400, but knew it had a piston put in backwards, and needed a piston, machine work to the cylinder, a chain and sprockets before I could even pretend to start it. I also had to drive 8 hours to pick it up and 8 hours back. The positives were that it was 100 percent original and in extremely good cosmetic shape. But I wanted this model of bike because it was what I wanted when I was 15 years old. I absolutely love it and wouldn't sell it for $2,000. That $400 turned into about $1,400 (probably a lot more, but I'm not admitting it) getting it close to where I want it. And I'm still going to spend another $450 sometime for new shocks and cartridge emulators.
But even after I spend that money, the suspension is going to absolutely suck compared to a modern bike. I love riding it, but most people would find it exhausting.