Launch Products on Amazon, Shopify, Etsy

I already run a modestly successful eBay store and now want to mirror that success on Amazon, Shopify, and Etsy.

Here is what I need from you:

• Seamless setup of each new sales channel—Amazon Seller Central, a branded Shopify storefront, and an Etsy shop—including optimized product listings, categories, shipping profiles, and basic policies.
• A unified inventory-management system so stock levels stay accurate across eBay and the three new platforms.
• A launch-ready marketing plan that combines on-platform tactics (Amazon PPC, Etsy Ads, Shopify SEO) with off-platform traffic drivers like Google Shopping, Meta ads, and email automation. I’m open to your recommendations on ad spend allocation and campaign pacing.
• A brief SOP or video walkthrough so my in-house team can keep everything updated once the hand-over is complete.

Acceptance criteria
1. All active eBay SKUs visible and purchasable on Amazon, Shopify, and Etsy with correct titles, images, variations, and shipping rates.
2. Real-time inventory sync tested and functioning across all four platforms.
3. First two weeks of ad campaigns live, with reporting dashboards that clearly show spend, clicks, and sales.
4. Handover documentation delivered and reviewed.

Share examples of multichannel setups you have executed, the software you prefer for inventory control, and a rough timeline to get the first batch of products live. I’m ready to start right away and will respond quickly to detailed proposals.