I’m looking to licence or purchase a complete, production-ready car auction solution that mirrors the user journey and feature depth of acvauctions.com. I need the full stack: responsive web app plus native iOS and Android apps, all connected to the same backend. Core requirements • Three role-based experiences already baked in—Admin, Seller, Buyer. • Admin panel must ship with user management, seller management, content moderation tools, and robust reporting & analytics dashboards. • Seller workspace should let dealers handle listing creation, photos/video uploads, live sales tracking, integrated payment processing, and a real-time negotiation chat. • Buyer side needs smooth bidding, instant notifications, secure checkout, and VIN/vehicle history pulls comparable to ACV. I’ll provide branding assets; you provide a runnable demo, full source code, and deployment support to get the site and both apps into production (App Store, Google Play). If you have additional modules—transport booking, arbitration flow, or CRM hooks—let me know; flexibility is a plus. When you reply, link to a working demo and outline your tech stack, hand-over documentation, and typical launch timeline.