I think the quality of the Millenneum Nikkor will hold S3-2000 kit prices above $1,000. A lot does depend on how many more years film remains an affordable consumer commodity. For now, consumer demand -- though reduced -- is strong enough to keep it that way. U.S. discount stores also stock Kokak B&W C41 film, which sells at a premium price for what it is ... about $10 for a three-roll pack, which is more than twice the cost per roll of Fuji 400.
I, for one, like the continued convenience and affordability of film. If it becomes an inconvenient, expensive specialty product, I'll probably stop using it.
I also don't think we're going to see any heavily used S3-2000s enter the market. My guess is that the few S3-2000s actually getting regular use are being babied by their owners. You're not going to see the well-broken-in cameras of professional photographers or the primary daily-use camera of advanced amateurs. Everything I've seen indicates that my S3-2000 is among the most used out there, and I'm shooting an average of a roll a week and not banging it against a second camera body. It's accumulating some dirt and a few small scratches, but I'm simply not treating it the way I used to treat more disposable Fs and Nikkormats.