Efficient Shopify Order Tracking App

Seeking a Shopify app developer to build a simple, non-automated app for managing arbitrage sales. The app will allow linking Shopify products to external sources (Amazon, eBay) without using APIs. Features include tagging sales as arbitrage, displaying linked sales and customer info for manual processing, and a "Fulfilled" button to update order status. Ideal candidates should have Shopify app development experience and knowledge of Shopify's API. Flexible budget, open to functionality adjustments based on development insights.