Lets compare and do some analysis of where Canaan NEEDS to be for their units to make sense:

S9 at 13.5 TH/s - current price (last batch, inflated price) - $2,725 ea.
A821 at 11 TH/s - estimated price based on 60 units, bulk pack, reseller - $2,885 ea.

S9 power consumption - daily cost (at $0.10/kWh) - $3.18
A821 power consumption - daily cost (at $0.10/kWh) - $2.88

Avg. Daily Profit from S9 - $32.50
Avg. Daily Profit from A821 - $26.23

Days to recoup investment (not counting power supply, shipping, customs, etc):

S9 - ($2725/$32.50) - 84 days - then a profit of $32.50 per day
A821 - ($2885/26.23) - 109 days - then a profit of $26.23 per day

1 year ROI:

S9 one year ROI - $11,862.50
A821 one year ROI - $9,573.95

I know things change in regards to difficulty and other factors, but if Canaan doesn't lower their price it won't make sense to purchase their product compared to the S9's, even at the current insanely inflated S9 pricing.  This is really sad, since I do believe Bitmain needs some serious competition.

Hopefully Canaan can see this and will end up pricing these similarly to their retired 741's since around the $1400 range would make sense to get these units, but at $2800+ it is ridiculously overpriced for the hash power you are getting with the amount of watts they use.

Just my 2 cents...