Multi-Platform Product Listing & Ads

I’m gearing up to publish my full catalogue on Amazon, eBay, Shopify, Facebook Shop, Etsy and Instagram, and I want the roll-out handled end-to-end so everything goes live together and looks consistent... (Budget: ₹1500 - ₹12500 INR, Jobs: Amazon, Content Writing, eBay, eCommerce, Etsy, Facebook Ads, Inventory Management, Product Descriptions, SEO, Shopify)