Micromax Canvas A1 on Paytm @ Rs. 4494
https://paytm.com/shop/p/micromax-canvas-a1-with-android-one-CMPLXMICROMAX_A1_4GB_WHITE

Use Promo code GET15 and get 15% cashback. (Max 1 order per user)

About Product:-
2 MP Secondary Camera
5 MP Primary Camera
Android v4.4.4 OS
Dual Sim (GSM + WCDMA)

Price Comparison:-
Amazon @ Rs. 5114
http://www.amazon.in/gp/product/B00NEFXOGA
Snapdeal @ Rs. 4931
http://www.snapdeal.com/product/micromax-canvas-a1-with-android/866047476
Ebay @ Rs. 5222
http://www.ebay.in/itm/Micromax-Canvas-A1-Android-One-Dual-Sim-Quad-core-1GB-RAM-Mobile-Phone-/181789119570
Flipkart @ Rs. 5390
http://www.flipkart.com/micromax-android-one/p/itme26wp7t7ujyxd?pid=MOBEF872PWJEJET3