The Booking.com group never honors these anyway, as opposed to the Expedia group.
Yep, you are right. I have booked many one night deals on Booking.com and like 99% of them gets cancelled. I have only booked once with Expedia and they did actually honor the deal. A 3 night stay in a 4 star hotel in Cadiz for only 17 p/n. That's why Expedia>Booking.
This is just a fraction of all the bookings i made with booking.com. As you can see they get cancelled most of the times, which is understandable if you look at the rates. Geannuleerd=cancelled.