It's called Chocolate and Coffee I think.
I've had a dig around on theme forest in the comments and stuff, and emailed the designer so hopefully I'll just have to wait.
It's just an HTML/PHP template, not Wordpress unfortunately
You can have a PayPal shopping cart but it will be in a separate window to your website. You can add things and then return to the website to continue shopping. But yes, a cart on the actual website would be much neater.
Have you looked at something like; Modern CSS + XHTML Ecommerce :: FoxyCart.com at all? I know it is some $$s per month but have heard good things about it and gives a neat, 1 page checkout to help stop abandoned carts. Kind of a half-way house between full e-comm and Paypal 'Add to Cart' buttons.
BTW, cannot get your site to load for love nor money!
I have only ever used the payment gateway side of google checkout but I believe the google checkout shopping cart will allow multiple products to be added to the cart only leaving the site to take final payment.
The following link has more information and a link to a demo of the store
What I'd really like to do is keep the cart that is there on the site, using the buttons etc, and having the items mount up in the cart on the left.
Then, pay through Paypal.
How could I work that into the site?