The first question potential new miners have to ask is “Will I make a profit?” When asked on a forum, Reddit or some other discussion platform, this question is often answered by links to complicated looking calculators that attempt to estimate the mining profit using a wide variety of parameters. The result of the calculations typically strongly depends on the choice of these parameters, in particular the difficulty. Most calculators use a preloaded value for the difficulty increase that is extremely conservative. There are further matters that complicated the calculations such as power consumption and associated costs. In the end, however, it is possible to provide an easy and very reasonable estimate for the upper limit of the amount of Bitcoins mined by a certain amount of hashpower over its lifetime. If this upper limit is already below the purchase price of the device, and it often is, then there is no point in performing the more advanced calculations.