Hello, I am kalpataru, a freelance expert developer and have specialized in bot, scraper, automation software, custom browser and chrome extension development. I have 5+ years of experiences in software development. I have developed many such type add to cart and auto checkout programs before . Feel free to ask me if you have any query. Thank you. Please a take look at few of my completed projects here. https://www.freelancer.in/u/kalpataru44.html