Can you set own prices when selling music on iTunes?
Check this info in official Apple site.This & this interesting sources. I think it could help.
If you already have an account with iTunes for music distribution, you can review your pricing options in the legal documents by logging in to https://itunesconnect.apple.com/ and then selecting Agreements, Tax, and Banking - if you don't have a selling account, you can apply and if accepted, you will get to review the legal agreements and then decide to proceed with signing them if you wish.
- https://www.apple.com/itunes/working-itunes/sell-content/music-faq.html