Looking for an eCommerce Plugin

Hi guys,

I’m struggling to find an eCommerce plugin that meets some criteria that I need it to meet. Can someone point me in the right direction if they KNOW that a product does or can fill my needs. I don’t mind if it is commercial or I have to buy plugins for it etc as long as it gets the job that I need done:

– Allows for Digital Downloads with Amazon S3 integration
– Accounts for VAT
– Can generate coupons or vouchers that can be used ONCE for a specific product. This is so that I can sell vouchers to customers to go and buy the digital download later. I would expect that each time I do this I need to generate about 300 codes, to simplicity and autonomy is the key here.

That last one is a deal-breaker. Like I’ve said, I’ve spent hours looking for this through various websites for plugins, and am just hitting a wall so I’d really appreciate input from someone who knows.

Cheers.