Did they increase the prices? I'm in the US and after adding items to my "bag", I see:
* Add AppleCare+ for 14-inch MacBook Pro for $279.00
* Add AppleCare+ for 16-inch MacBook Pro (M1) for $399.00
(The 14-inch is also M1, but it doesn't appear in the link text)
The duration of the policy is a bit unclear to me. I've read about a yearly option but don't see anything about that when purchasing. It does say "Get up to three years of technical support and accidental damage protection" below the links referenced above, but I don't like that it says "up to". The "Learn More"
page also really doesn't describe the duration of the policy.
MacRumors
guide page, last updated October 12, 2021, says "AppleCare+ for Mac, from $99 to $299".