Even with $3800 it will never ROI. For getting an ROI the price must be at $3000, that without considering shipping cost and local taxes. Dont say the bitcoin price will increase bullshit, if you are sure about the price increase then buy bitcoin directly now using the same amount, will give you more return.  The mining game is over unless the manufactures understand what is an ROI for the buyers, now they want to dig the gold with their own shovel.

The following difficulty increases will be higher than the past couple of ones as neptunes started to ship, more than 1000 SP10 and SP30's will be address to the network in no time.

Not saying its any ones fault, just sharing my thoughts..

https://tradeblock.com/mining/a/8650cc05ef