One-Click Shopify Product Migration App

I’m looking to commission a custom Shopify app that eliminates the grind of moving products between stores. The tool must handle two core workflows:

1. Direct transfer – With a single click (or bulk select), I need to copy every column of product data from one of my Shopify stores into one or many other stores I own. That includes titles, descriptions, all variants, every image, inventory counts, and any existing metafields.

2. Competitor scrape → distribute – The same interface should accept any Shopify store URL, pull the full catalogue (again, every field and image), then let me send those items straight into one or several of my shops just as easily.

3. After the App finished, I also want to sell this App at Shopify store marketplace, so the App should meet Shopify store resale requirement and price plan structure as well as the CRM management system for the customer subscription.

Reliability matters more than flash. I want a clean dashboard (Polaris-style or comparable) showing source store, target store(s), transfer progress, and a log of successes or errors. Background jobs should keep the browser free, and Shopify Admin APIs or GraphQL endpoints can power the heavy lifting.

Core acceptance criteria:
• One-click copy or bulk select for unlimited products.
• All product information, variants, images, inventory, and metafields arrive intact on destination stores.
• Competitor scraper works with any Shopify storefront, no manual CSV work required.
• Simple multi-store selector and progress reporting.
• Clear install/setup instructions so I’m running inside my partner dashboard without extra configuration.

If you’ve already built migration, feed, or scraping utilities with Node.js, Python, Ruby, Laravel, or similar—and you’re comfortable with Shopify’s rate limits and API scopes—I’d love to see a quick outline of how you’d architect and secure the solution, plus an estimated timeline to a working MVP I can test in my development stores.