That depends on how you do it. If you go to one of those mall places where they staple gun it, it costs whatever the price is of the earring and the service (usually under ten bucks). If you get it...
if you get it done at icing or claire's in the mall it costs $16-$40 depending on what kind of earrings you want to be pierced with. the $16 ones are just plain little stainless steel balls but if...
well it depends on the type of ear ring you get..... but i got mine done at claires in the mall.... It cost me $16 bucks.... cheap compared to other places.... plus it's painless