When I verified the for fare from Tanjore to Egmore the amount shown is
16180 MANNAI EXP 9-1-2012 THANJAVUR CHENNAI EGMORE SRCTNW
Train Type Distance (kms)
MAIL_EXPRESS 351
Fare/Charges Class...
more... -- Sleeper
Base Fare 150
Reservation Charges 20
Superfast Charges 0
Other Charges 0
Total Amount 170
Concession Amount 70
Net Amount 100
But when I purchased the ticket by paying cash at ICF I paid Rs124. Why is the difference?