In the past I have used integrated a javascript shopping cart which has worked, but there are limitations. For example you would have to hand code in each item, so where you have hundreds and thousands of items it might pose a difficult problem – and picking the right ecommerce software for such a venture is probably your number one concern.

There are other options of course, such as server-based shopping carts, hosted shopping cart software packages, and even more complex integrated shopping carts.

Hosted ecommerce software packages do offer some advantages, they’re quite straightforward to set up, you get excellent technical assistance (since most likely they’re hosted on their servers), they tend to be secure (as of course that’s their bread and butter, why wouldn’t they be?).