Car parts web shop

We need a multilingual web shop based on existing engine with simple and SEO-optimized design. Webshop should give users access to up to 30 million products. There is no need for standalone pages for every product. Database rows for every product will contain just TWO values – product number and its price. One DB file will contain approximately 600k to 1mill rows on average. There will be up to 50 DB files. We need a turnkey solution with configuration and setup. All the details are described in document attached.