Claire's is just as expensive as a proper piercing shop.
About $60 for both lobes is average. Anything more than that and you should get some fancy jewelry with it too.
Please keep in mind that Claire's doesn't give piercings, its technically a blunt force trauma wound. The tip of the earring they shove into your ear is very dull in comparison to a piercing needle. It hurts much worse, it takes much longer to heal, and you will get terrible scar tissue buildup from it.
For the same price you can go to a professional piercer, have a proper piercing done, have it be less painful, heal faster, and have no scar tissue.