Priceline Express listed what I figured was the Marriott for $78, however when I clicked to purchase I received the reply "no longer available". I closed my browser and tried again however this time the price listed was $152. Although I wasn't agreeable to that price, I clicked to continue to see what the response would be, and again received the "no longer available" reply. So I instead went to "name your own price", entered $74 and the bid was accepted. I have experienced this same thing with the Express product in this zone many times.
Booked through the BetterBidding link to PRICELINE.