Boot.dev question

I’m so sorry if this isn’t allowed but I found an interesting phenomenon and none of the programming Reddits allow images at all so I’m not sure where to ask about this. I saw boot.dev in a sponsored segment of a YouTuber’s video, and I decided to click to see what it’s all about because it sounded interesting. I scrolled to their pricing tab and it told me 399 a year. Then I refreshed and it said 349 instead. I asked a friend to check what the price is and for