Purchase High-Performance E-commerce Site

Hello developers,

I’m looking to purchase a fully built e-commerce website that can support 10 million+ products with fast performance, reliable syncing, and strong backend architecture.

This is NOT a job to build from scratch. I only want already-built systems that I can buy and customize.

Requirements:
The system should:

Handle 10 million or more products without slowing down

Support fast search, filtering, and browsing

Automatically sync price, stock, images, and descriptions

Support product data import/update from scraper tools or APIs

Handle thousands of daily visitors and orders

Be hosted or deployable on cloud platforms (AWS, GCP, etc.)

Preferred Tech Stack:
Layer Preferred Tech
Frontend React.js, Next.js, or Vue.js
Backend/API Node.js, Django, or Laravel (REST/GraphQL API)
Database PostgreSQL or MongoDB (sharded preferred)
Search Elasticsearch or MeiliSearch
Queue System Celery (Python) or BullMQ (Node.js)
Caching Redis or Varnish
Hosting AWS / GCP / DigitalOcean
CDN Cloudflare / AWS CloudFront
Admin Panel Custom panel or Headless CMS like Strapi/Sanity

> Not Interested In:
Shopify or WooCommerce setups (too limited for scale)

Basic WordPress sites

Marketplace scripts that aren’t optimized for large product volumes

Templates from ThemeForest or CodeCanyon

Open to These Platforms:
Bagisto with ElasticSearch

Saleor (React + GraphQL)

Medusa.js with scalable backend

VueStorefront paired with Magento, BigCommerce, or custom API

> If You Have a System Like This, Please Share:
> Live demo link (if available)
> Summary of tech stack used
> Admin panel access (if possible)
> Price (license or one-time)
> Performance details (how many products tested, speed, etc.)