What's with the new terminal?

"When KLIA2 was first proposed, 

Malaysia Airports (MAHB) said it would cost RM2 billion, 

a figure that was later revised to RM2.6 billion. 

Then came news that the terminal would cost RM4 billion, 

double the original estimate.

Now there’s talk that the bill 

could go as high as RM5 billion. 

That makes no sense — 

the low-cost terminal will now cost much more than KLIA. 

Yes, I asked for a new terminal 

but one that has simple facilities. 

Did it have to cost 20 times our present LCCT?"

~Tony Fernandez, What's with the new terminal?