Hi Nithi
I got 18K + 15K discount. 15K is yet to come because this comes straight from the company (as my dealer says).
GLS is on road 5.42 W/O Discounts
GLX is on road 5.81 (Alloy wheels and ABS extra)
The difference is not much but generally the alloys provided are of not very high quality and you can easily get very good Alloys from outside and ABS is not all that costly and ABS helps you immensely on highways where I don't go. I could go for GLX if Airbag option could have been there.
btw to know more about ABS:
Tips for Driving with ABS (Anti-Lock Brake Systems) - NSC