I love all of the extensions in the "Nice" lineup. They all get the job done quickly, with extremely minimal fuss. What's even more amazing, is that they can be made to do more with just a few extra tags in the plugin text. So... if I just need to create a quick button to sell a product, it takes literally a few seconds. If I need that button to also calculate shipping, charge tax and add other product options, the plugin has that ability too. The documentation is excellent, and the support is friendly and helpful. If you need to quickly build a simple e-commerce, this is the plugin to go with.