A year ago, you could easily buy a good webcam for very little. The Logitech C920 is, to my eyes, superior to the MacBook Pro webcam, and offered at least semi-decent audio quality. Pre-pandemic, it could sometimes be had for £25 (~$35).
Post pandemic, however, webcam prices seem to have at least tripled (if not quadrupled). As I type, the C920 is going for £140. I can understand this as a supply/demand thing, but surprised that things haven't started to level out yet.