I am checking to see what is the cheapest way to travel to KL Sentral from KLIA and still to my surprise, RM 7.20 if you take a bus to Nilai and take a commuter ride from Nilai to KL Sentral.

KLIA – Nilai  RM 2.50
Nilai – KL Sentral RM 4.70
Total RM 7.2

Second cheapest alternative will be

KLIA – LCCT RM 1.50
LCCT – Sentral RM 9.00
Total RM 10.50