Last night my friend and I wanted to have Indian food in Ganga, but when we arrived there, about 10 people were waiting in line, so we decided to go somewhere else.
Then we found Namaste, the new Indian restaurant (3 branches in Seoul though), which is very close to Ganga.
We ordered two curry (lamb and chicken) and two nan. one rice...
Their main dishes are $3 cheaper than those in Ganga in average, but quality is VERY good.
This dinner cost us ~35000won.
Here is the direction of the new restaurant: http://ditu.google.com/maps/ms?hl=zh-CN&safe=strict&client=aff-cs-360se&ie=UTF8&msa=0&ll=35.163442,129.159672&spn=0.01249,0.01929&z=16&brcurrent=3,0x31508e64e5c642c1:0x951daa7c349f366f,1%3B5,0,1&msid=100449861518836355008.00048f00d0dbe6206989c
I marked Ganga, Namaste and subway station here.