Hey ! I am interested in your project.
I have been doing guest posting for many of my clients previously.
I have a variety of registered profiles on platforms like Medium, Scriggler, Niume, blogger, Tumblr, etc and many more.
If you can contact me i can send over links to my work.
I do not know how to charge in INR but in US $ I will prefer something around 10 - 15 $ per guest post. It depends on topic as well. We can discuss more on chat.
Thank you !