You could get many of the Keralite household/kitchen requirements here at a legitimate price. But, the space is congested. Also, do check for expiry date before buying.
I have known Anil super Shopee for the past 20 years. It is the cheapest South Indian shop that offers you all kinds of South Indian items directly procured from Tamilnadu and Kerala. They are also suppliers to all local South Indian outlets. You get a small discount when you purchase from here.