Amazon & Flipkart Data Automation

I currently copy price, review count, star rating and the ASIN or FSN for each of my catalogue items from Amazon.in and Flipkart.com into one Google Sheet every single day. I now want that entire routine converted into code... (Budget: ₹1500 - ₹12500 INR, Jobs: Automation, Data Extraction, Google App Engine, Google Sheets, JavaScript, Node.js, Python, Web Scraping)