A quick calculation:
10 Gridseed Kit, 3 MHs = $200 x 10 = $2000
3 MHs at auto switching pool get you, let's see, 0.0045 BTC per MHs, so 0.0135 BTC a day, so you are making $5.805 (at $420/BTC) a day. It will take the buyer about 344 days to break even.
I feel so sorry for those who got snookered.
dont forget that you do get them essentially quickly and the price is in a bear market right now.
Some people are able to achieve more BTC and LTC buying miners available today then getting a preorder and waiting for something that might come.
then again nothing beats buying coins outright at support levels.