when i was searching dates, the period over xmas was not the cheap rate, so i shifted to dec 9th to 16th...also, doing some random searches on agoda now, october and december, the site says: "Sorry, there are no available rooms at Wananavu Beach Resort that match your number of rooms and guests on your selected dates".
As someone had mentioned earlier, other OTAs had rates in the $130 USD range when I was searching about 1pm ET (the Expedia rate was also ~$130 USD once you clicked on their site):
however, when searching now: