Swiggy — Pricing

I tried to order few items in swiggy on 10/07/22 from a local restaurant in my area (AIROLI, NAVIMUMBAI). selected the items and added them to cart. the total payable amount ( including tax and they have added a delivery fee also to it ) is Rs 431/-
Out of curiosity and some recent news that i saw online i just called and checked with the restaurant directly.
and to my shock there is a big difference not only in the food price but they deliver it free of cost.
Why is this double pricing.
Same item same restaurant, but two different price.