Greetings!
Amazon Seller Account is a very effective and efficient way of selling your product, I can make multiple accounts for you with my experience and skill in this field. But about the second part of your request, GST is not applicable only on a few products in India, and if you feel that what you want to sell on amazon comes under the list which I shared below then only I'll be able to help you.
As for me, I am an Indian, currently living in Delhi NCR, and have the required skills to complete your task.
Also I would like some kind of contact id where you can share the details.
List of things on which GST is not applicable:-
* Aquatic feed
* Betel leaves
* Bread
* Butter milk
* Children's' picture, drawing or colouring books
* Coconuts
* Contraceptives (Condoms)
* Curd
* Earthen pot and clay lamps
* Educational services
* Eggs
* Fire wood
* Fish
* Fresh fruits
* Fresh milk
* Fresh vegetables
* Gandhi topi
* Hand operated agriculture equipments
* Hearing aids
* Human blood
* Human hair
* Indian national flag
* Indigenous handmade musical instruments
* Jaggery
* Judicial, Nonjudicial stamp papers, Court fee stamps
* Khadi yarn
* Kumkum, Bindi, Sindur
* Lassi
* Live animals
* Live trees and plants
* Medical services
* Municipal waste, sewage sludge, clinical waste
* Non-alcoholic Toddy, Neera
* Oraganic manure
* Pappad
* Plastic bangles
* Poultry feed & cattle feed
* Prasad (sacred food)
* Printed books, including Braille books and newspaper, periodicals