^Yes, keep items at their starting price forever and make ROI near end of time..
Has anyone ever made ROI on an AsicMinerUSB ?
Well I am new to Bitcoin mining and I am looking to get 10 Erupter to get to learn a bit the mining scene.
I dont expect to become rich but according to bitcoin profit website, 10 USb Erupter of a total of 3330 Mh/S x current difficulty 50,810,339 x BTC/Block 25.00 x W25 (w2.5 x 10miners) x Electricity per kwh USD $0.15 = $315.29 on a 3 months frame.
Plus counting the raspberry pi which I will be using to run the mine client which I would assume it might be an additional $15 to skim off, you will end up with $300 on 3 months frame, means that you will be able to pay back the miners within 5/6 months, this still according to the bitcoin profit website.
Again, you certainly don't become rich, but it's something, and once you have paid back for the miners and ur hw, the rest will be ur effective small ROI.
you've not accounted for a 75%+ increase in difficulty every month. When you do, you never pay off the investment. This has been the same with every price point on the BEs since they were released. Do the math again, and every ~11 days, increase the difficulty by 25% and see what you come up with..