I haven't been working on it for some time, and as i am not using it myself in my day to day work, i am not planning to work on it again at the moment
The project is open source, so anyone can join or fork though..."
It's an excellent component, working straight out of the box and is really easy to configure and run. Unlike some previous testimonials, and considering it's a free extension, I find that the the developers deliver adequate and knowledgeable support through the forums.
All-in-all it might well be the best cart solution for Joomla if cost (free), user-friendliness and sophistication are weighed together.
I can't because RedShop doesn't offer Joomfish support - and is therefore not an option for any multi-lingual e-shop. And that's a major flaw that should really subtract more than one star off this rating.
But I'll leave it at that, hoping that the developer will very soon realize that multi-lingual support is a prerequisite for any commercial e-commerce software aspiring to becoming "first choice".
We are talking with Joomfish about it for the future :)
And it comes with professional and dedicated support by the developer.