Only first batch of a Miner would be worthy
Looked tempted cause that price of US$850 on bitmain page, what they didnt say it's SECOND BATCH!!

First Batch:
https://shop.bitmain.com/product/detail?pid=00020180503154806494uGcSyiu806FD
Second Batch:
https://shop.bitmain.com/product/detail?pid=000201806050936438836vKVHwmM06C8

People who bought D3 will know what this means.
Also, you can see first batch they only accepted cryptos and not bank transfer.