Nobody would pay 1k a month, it cost me 200$ to get a scraper programmed on my own and its all automated. Takes like 10 minutes a week to keep working correctly.
You also have to worry about maintaining 1000 accounts, all with different demographics. Having tried doing this(on a smaller scale) I can tell you that maintaining these accounts and making a scraper that can't be identified as a scraper is much harder than it looks.
You guys had better get bulletproof hosting for this outside the US though- Facebook is sure to come after this with a vengeance.