Ecommerce Feature Integration Needed

I’m ready to turn my existing site into a fully-functional store. The core pieces I need you to build are: • Product catalog – I want visitors to browse a clean, searchable list of items. • Shopping cart – users must be able to add, remove, and update quantities seamlessly across pages... (Budget: $250 - $750 AUD, Jobs: eCommerce, HTML, MySQL, Payment Gateway Integration, PHP, Web Development, Website Design, WooCommerce)