https://pharmeasy.in/health-care/products/colga...
Colgate Slim Soft Charcoal Toothbrush (buy 2 Get 2 Free) – 4 Pcs
https://www.desidime.com/deals/colgate-slim-soft-charcoal-toothbrush-buy-2-get-2-free-4-pcs-save-extra-with-codes-like-get20-use75-etc?page=1#post_7400676
But delivery charges too high even plus members take free delivery advantage on min order of 199 
%20-%204%20Pcs.%20(save%20extra%20with%20codes%20like%20get20/use75%20,%20etc)%20for%20Rs.%20105.0%20%20at%20){kind=link}
%20-%204%20Pcs.%20(save%20extra%20with%20codes%20like%20get20/use75%20,%20etc)%20for%20Rs.%20105.0%20%20at%20){kind=link}