React Native Affiliate Shopping Integration

I have a cross-platform beauty app already live on both iOS and Android, built entirely in React Native. All core features are in place; the last piece is a fully functional shopping flow that monetises through affiliate links.

What I need you to add
• Seamless integration with the Amazon Product Advertising API and EarnKaro so every Buy Now tap routes through my tracking links.
• Automatic retrieval of high-resolution product images, title, price, rating and description directly from the official data sources—no manual uploads.
• A fast, in-app search that lets users find any beauty or skincare item returned by those APIs.
• Two new screens: a dedicated Shopping area and a “Recommended Products” feed that surfaces items tied to a user’s skincare routine logic I already have.
• Proper deep linking / redirection that respects Amazon affiliate policies and EarnKaro requirements, confirming commission attribution.
• Clean, well-commented React Native (JavaScript/TypeScript) code that plugs into my existing repo and works consistently on both iOS and Android.

Acceptance criteria
1. Search returns relevant products in under two seconds on average test devices.
2. All product cards show live price, rating and image pulled from the API on each load.
3. Clicking Buy Now opens the correct Amazon or EarnKaro affiliate URL and logs the event in Firebase (already integrated).
4. No API keys or secrets are hard-coded; they should sit in environment files that I can swap for production.
5. Code passes ESLint checks and builds successfully with Xcode & Android Studio.

Please include:
• Examples of previous Amazon PA-API or other affiliate integrations you have shipped.
• A ballpark timeline with milestones (API hookup, UI, QA).
• Your fixed or milestone-based quote.

I am ready to provide existing repo access, design assets and test Amazon credentials as soon as we agree on scope. Looking forward to collaborating and getting this revenue channel live.