Automated Photo Sale E-Cart

I need an e-cart system for selling photos online. The setup should seamlessly integrate print orders with payment splits.

Key Requirements:
- When a customer buys a photo, automatically send order details to the printer via email.
- Payment should be split automatically: a fixed amount goes to the printer, the remainder to the artist.
- Customers should provide shipping address, contact details, and print size.

Ideal Skills and Experience:
- Experience in developing e-commerce platforms
- Familiarity with payment processing and automation
- Ability to set up email notification systems
- Knowledge of integrating order management systems with third-party services
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EDIT: The response has been quite overwhelming. I will need a few days to sort through the proposals.
I am unfamiliar with the various programs and systems, so if you asked me "What _____ do you prefer?" The answer is "I don't know". I will also be talking with my printer this week to see what systems he prefers.
Thank you all for your input. I will get back to you.