Why Yaghma Kebabs are so expensive in Zomato and Swiggy? This restaurant is charging double of price.

I saw the yaghma Kebab's offical site and saw the prices of kebabs and rolls and shocking part is that most of the prices are half of what Zomato and Swiggy prices Eg: 1).chicken roll costs 80rs in their market and site They sell that at 160-170 on Zomato and Swiggy 2). Yaghma and other rolls costs 90-130 But on both platforms costs 200-270 that's twice a amount Other tikka and grill items costs 110-200 Z and S costs 240-300 Even my home is near that restaurant. We rarely go this restaurant with my cousins and family. Many of my friends who live outside of kaloor orders this restaurant and they say yaghma is very expensive but actually they are cheap in restaurant. That's why I rarely order the restaurants if they are scamming people by putting doubling of the price Here is the link https://yaghmakababs.com/