Please read this carefully: Apple will NOT _sell_ you a battery cheaper than their inhouse genius bar battery service fee. Apple can barter a battery for ~$10 cheaper than that fee if you:
- tell them detailed information about the device in need of a new battery, wait up to a week for that bespoke battery to arrive, then send old battery back.
- agree to share all of your accounting with Apple, now and I think up to 5 years from termination of the contract.
- agree to share all of your client details with Apple.
- agree to audits checking if you dont posses any third party parts that could be used in Apple products.
- agree to never repair Apple product beyond strict list of services approved by Apple.