Re: "What will Apple reveal tomorrow" @a53
No assumption made; just responding to a comment that accused Apple of egregious pricing and margins with the actual numbers, to evidence that Apple's pricing and margins are the same as almost everybody else's (with some obiter praise for the real outlier: Google).
Also you might need to redress your assumptions about resale value. Too many people don't seem to know how to sever their iPhone from their iCloud account, with the effect that secondhand ones are now routinely, ummm, un-activatable. Just as if they were stolen. That's going to hit prices.