While I disagree with the tone and tenor of wolframarnold on most of it, I do agree that the amount is a little low. I personally think it should be at least $4500 or so, but I could get by with $3500 if I needed to, but then you'd be on the hook to pick up software afterward (Photoshop isn't cheap, etc.)
Also, outworlder's point is germane. The term "tech stipend" leads me to believe that you're going to give me $2500 to pick up my own stuff, that I would then own. If that's the case, it changes the equation a little better, because I already personally own three larger monitors that I'd be happy to drag to the office if that was the expectation.
Regardless, I thought the job posting was MUCH better than 'cute'. I think I've officially ruled out working in NYC, but this offer is tempting, if only for the coffee. Still though, it's very tempting. If the platform choice weren't Ruby, I'd be all over it.