I think the price is in the "reasonable" ballpark - it's so hard to say with MA inflation. Personally, the price is a little high for my tastes, but I'm a cheap SOB so what do I know? If I wanted the gun I'd offer $700 and see where you can go with it.
But if you REALLY like the pistol, and you have $900 and you're not counting on reselling it, then why not buy it? There are a lot of pistols you can get for $900 and under, but if this is the one you want, I don't think anyone would fault you for buying it. You're not getting a deal on it, but if you find a gun that you just love to shoot, that's priceless in my mind.