This is a very common question while working in tattoo industry. Usually, time also defines the price of a tattoo, as thou the price for tattooing is per hour. It is hard to give an exact answer to this question. Duration of a tattoo depends on many things, such as the size of a tattoo, design (more detailed or not, colored or just outlined et c.), skin type of a client and also his endurance(and capability of keeping still after long hours). However always take notice that the time and price the tattoo artist gives you is not final and can be different, that means at the end it can cost you a little bit more than you expected or less. When having an appointment in tattoo studio take the whole day off, do not arrange other activities on the same day. You must not be in a rush, by this you are giving pressure to an artist and this also influences his work and state of mind. Take notice that he is drawing on your skin and has to be concentrated and has to take his time so that your new ornament becomes as beautiful as it can get.