1450$ is of course wishful thinking.

I think you need to start dictating what you'll pay rather than the other way around and combine things into package deals. Unless that film is slide film there's no way it's worth 3$/roll. Even then it's a decade old. Educate them on this and not to go off eBay prices because that's obviously what you're doing. eBay prices don't count here because showing up in person means you're saving the time of listing all of it, fees, buyer coordination, etc.