i dont actually think many places would pierce it at 13, i think you have to be 16. i got mine done at 16 i think, and now i kind of regret it - i got it done but what i didnt know was that quite a lot of the time they can fall out - basically the skin gets thinner and thinner till the bar drops out (not nice). this happened after about 6 months of having it done and left a horrible scar, then i decided to get it done again 3 months later since i didnt think it would happen again but it did this time after only about 2 months, and now i have a big horrible scar!!! so think very carefully about it!! i think most places charge �30 which is alot for something that may or may not drop out in a few months!!