I tried booking several rooms in a large hotel for more than 10 days for late January with asia rooms com this last week.
I waited for more that 48 hours for confirmation before I decided to phone them.
I was told that the price had gone up and they would email the new rates within an hour.
Several hours later I was told the total price would now be $7,550.
The original price was $5,600.
Needless to say I cancelled the booking and looked elsewhere.