> The price list at the bottom [1] isn't fair, a company like Apple usually pays more for it's components for "higher" quality (usually a probabilistic reductio

> The price list at the bottom [1] isn't fair, a company like Apple usually pays more for it's components for "higher" quality (usually a probabilistic reduction in failure rate). 99% of the time the difference between "quality"/automotive/aerospace parts and regular parts is literally just extra quality control steps at the input, intermediary, and output stages. The parts that don't pass Apple's muster are sold to other manufacturers so often times vendors will break even on supplying Apple just to keep their baseline business afloat while they make money on the parts that Apple won't use but others will. Based on my conversations with Apple engineers, they are especially brutal at the negotiating table because they know that they can single handedly take up all of the vendors capacity while getting at-cost parts and allowing them to profit via side channels (parts that they would otherwise discard). That may sound unfair but as long as you can keep up with Apple's standards, that means your business is set for life and you can make all the money you want with other clients who need those same parts but aren't as discerning. That's why you can't buy many of the higher graded parts: they're the same parts but Apple has first pick because Apple will always be a bigger client than you with far more negotiating power. Chances are you could drop this price list by 25-50%, even for the custom parts, and you'd be closer to what Apple pays.