I was recently booked in to the Hyatt Ziva All Inclusive in Puerto Vallarta booked direct through the Hyatt website. The room rate was approx. $650 per night.

This evening, I was casually browsing on Expedia and found that same room, room type and for the same dates availabel for $300 per night all in.

Expedia was indicating that the room was 55% off as of tonight.

This is a significant discount...how does Expedia manage to provide the same room for this price?

I was recently booked in to the Hyatt Ziva All Inclusive in Puerto Vallarta booked direct through the Hyatt website. The room rate was approx. $650 per night.

This evening, I was casually browsing on Expedia and found that same room, room type and for the same dates availabel for $300 per night all in.

Expedia was indicating that the room was 55% off as of tonight.

This is a significant discount...how does Expedia manage to provide the same room for this price?

Update 24h after posting the question: the price on Expedia is now higher than that being quoted on the Hyatt website (consistent with what I had seen originally when I was trying to decide if I should book with Hyatt or Expedia)