Now I'm confused, Apple don't sell parts, infact they don't even have "proper" authorized repair agents, they prefer to IMHO to rip their customers off by selling them a new device. It even comes down to where customers are even prepared to accept a new device and pay for it, providing they can get their photos and personal data recovered from the old device, to which Apple say its impossible to do. This a load of BS because there are many well documented cases of Independent 3rd party repairers who have both successfully been able to both repair item that were declared by Apple as unrepairable and also recovered photos and other personal data from other so-called unrepairable devices that Apple refused to even look at.
Apple have even now gone down the route of data locking batteries to a device, along with home buttons and screens, by crippling certain functions if anyone else other than Apple replaces these items because they embed chips within them that need to be programmed to unlock the features.
How would you feel if your TV remote lost certain functions because you replaced the batteries?, or your car had a heated function that would only work if the manufacturers agents replace your shattered windscreen, etc?