I went in to the Apple store to pick up a repair (extended out-of-warranty coverage on a 4-year old Macbook, yay!) and I bought a keyboard. Picked it up off my shelf, scanned it with my phone (their Apple Store app), receipt emailed — and walked out. No salesperson, just do it yourself. Still seems weird to me.
(After trying the third party keyboards for a while, decided the Apple just works a hell of a lot better in general, even though it costs more than double — it’s worth it to avoid bluetooth annoyances.)