Originally Posted by
777 global mile hound
Appreciate the message
Still able to book 4 nights for 135k or 5 nights for 140K so that rules that out! There has to be some method to their madness

The free night is the lowest point value. IfIf you query the 5th night separately and check the individual nights you have booked, likely one of them is a lower value.
For example, nights 1 to 5 are 35k, 35k, 30k, 35k, 35k. If you book 4 nights it is 35x3 + 30 = 135. On adding the 5th night it is 35 x 4 = 140 as the 30k night is free