I recently purchased 4 late November batch D3's from Bitmain. Considering the potentially significant increase in difficulty in the coming months, would it be ideal to sell 1 or 2 of the miners on Ebay? I see people paying almost as much as double the retail price and I am wondering if selling them is something I should consider? I'm a little impulsive and impatient when it comes to ROI and like to have money in hand as soon as possible. If I could get my ROI in 3 or 4 months I would be happy but any longer than that, I am simply not content with. I would love to hear your opinions. Thanks.