Thank you for your comments and suggestions.
The WordPress shopping cart plugin has been released :

http://tribulant.com/products/view/10/wordpress-shopping-cart-plugin

All the best,
Antonie

I’ve been doing some work with the another wordpress ecommerce plugin, but it’s a difficult one to get doing what you want.

One thing I’d love to see would be a good system for controlling paid downloads, whether they be mp3′s, pdf’s etc.

You know, person makes a purchase of a downloadable file. When payment is approved they automatically get an email with a randomly generated link which expires in x days (or they have a password to access the download files).

Something which would be even cooler (!) would be that if they purchase multiple downloadable files, then all items in their order are zipped before the link is sent.

It would be great as well if each purchaser would need to create an account and that they could track their past orders and this could also then tie in with a recommendation system a lá amazon.

Also “Customers who bought this also bought…”

Sorry, just going off on one. I’m sure you’ve considered all of these things.

You’re taking on a good project. I’ve been awaiting a good shopping solution for wordpress. The problem is always that there’s something missing, something that might not be a common requirement, but it makes it impossible to use without customisation.

Are you looking at allowing potential extra modules – something that can be “plugged in” to the extension?

Anyway – let me know if you want someone to look over the XHTML structure – I’m fairly good for spotting bugs in that and suggesting good structural HTML layout.