Custom Node.js eCommerce Development

I'm looking for a skilled developer to create a custom eCommerce-style website for my business using Node.js. Key features include:

Vendor-side functionality:
- Upload and manage products

User-side capabilities:
- Browse products
- Save favorites
- AI-powered photo search for similar items
- Basic user accounts to track preferences
- View shared product boards/designs with a simple chat interface

Requirements:
- Experience with Node.js and custom eCommerce solutions
- Familiarity with integrating PayPal as a payment gateway
- Strong UI/UX design skills to ensure a user-friendly interface

Please provide:
- Proposed technologies and tools
- Estimated budget or pricing structure