there is zero chance these will be less than $1000 US. bet.
I don't think there is zero chance, but I do get that they would be significantly undercutting their S2 product. In that case they would either deeply discount the remaining S2 stock or else they are already nearly out of stock on them. By pre-announcing the S3 I suspect their S2 stock is low.
There no Bitmain products for sale at any of there outlets. None. The S3 will be the main focus and a huge winner with giant demand $1000 bare minimum. Prob more like $1300. I would bet on it
That would be way too much for the hash rate, 0.9 - 1 BTC shipped at most, any more and there will be no chance of ROI, with the snowballing difficulty increases and pricey customs charges.