Android Shopping App with Payments

I want to build a streamlined shopping/delivery Android app that lets users browse our catalog, add items to a cart, and complete a one-time payment right in the app with their preferred card or digital wallet (Google Pay, Apple Pay-on-Android, or similar)... (Budget: €250 - €750 EUR, Jobs: Android, Android App Development, Graphic Design, Kotlin, Mobile App Development, Payment Gateway Integration, Stripe, User Interface / IA)