The cost of a body piercing varies depending on  several factors, including where you’re located, how close to a major  city you are, and what kind of piercing you’re having done. Generally  the more difficult the piercing, the higher the cost. Keep in mind that  you get what you pay for as well, so don’t depend entirely upon cost to  choose your piercer. If a piercer is charging significantly under the  market cost in your area, he may be cutting corners in areas he  shouldn’t, such as sterilization and other safety procedures.
You can pierce yourself, but it’s not really a good idea. It’s simply  too hard to keep the area in your own home (or wherever you happen to  be) clean and sterile enough. You also may have trouble lining up and  placing a piercing squarely where you want it, and if you lose your  nerve half-way through the piercing, you’re stuck with it half done.  If you do it at home, you’ll probably do it on an impulse, which will mean you won’t have the right tools. Piercing needles are incredibly sharp in order to reduce the pain and make a good, clean cut. No matter how sharp that sewing needle is at home, it’s not as sharp as a piercing needle, so it will hurt more, bleed more, and may not heal as cleanly.
