Theme Forest is a marketplace for Free and Premium WordPress Themes from different developers.
You can brows the work of hundreds of different web developers. You can preview any website, template or theme before you purchase it. There are a lot of comments from others who have purchased WordPress themes here. See which themes or templates are most popular, and even rate the work for even more transparency.
ThemeForest has a collection of themes from world-class WP theme developers. If you are looking for excellent theme functionality, then you’ve definitely come to the right place.