I would be very curious to hear a "cost breakdown" that would explain why the stainless steel expansion band costs $450. This strikes me as being almost psychotically extravagant. Lotsa third party alternatives are going to appear. Maybe Speidel will sell one in the $75 - $50 range.
I may not be Tim Cook, but I'll take a shot.
It comes down to quality. On the Apple website they claim that just to cut the 100 or so pieces needed to make their bracelet takes nine hours. It then is assembled and hand finished.
And you think that a fair price for that kind of work would be $50? It's a good job you are not running Apple.
By point of comparison, a Tag Heuer Link bracelet on an unofficial retailer site costs $575. Longines wants $250 just for the 'deployment buckle' so that doesn't include an actual strap. Breitling charge between $700 and $2000 for theirs.
You also seem to be ignoring how many hundreds of prototypes had to be made before the final design was achieved, how much money it cost to invent the manufacturing process and to train the staff.
On top of all that, most Swiss or decent quality solid stainless bands have a cheap spring and pin system. The higher end ones are usually screws. But the bottom line is that on most watches, even on the ones that cost more than the Edition, you're going to need at least a screwdriver, but sometimes specialty tools to change bands or add or remove links.
Apple comes to the party, and despite not having a couple of hundred years of watch making experience like some of the major players, bring a bracelet that can be resized by adding or removing links, and can be switched out, all without any tools. It's a huge innovation, that I simply have not seen commonly used even in high end watches costing thousands.
So yeah, to me it seems pretty obvious that there must have been a massive cost to get to the point where these could be sold, and obviously the price point has to be market competitive, and recoup all the costs of inventing, and the ongoing costs of producing this bracelet.
But if you think $449 is too pricey, you can slide on a $49 Sport band, and call it a day. I got to play with one over the weekend, and it's pretty good quality for that kind of money.