This site was a major challenge for us at CoyleDesign! We were instructed to make a comparison site for airport car park retailers. The pricing mechanism was highly complex and required full use of Drupal 7 Commerce.

However, even though the backend of the site is highly complicated we wanted to ensure that the user experience isn't. So we created a very simple interface for customers to look for their selected car parking supplier. The site integrates with PayPal and soon Sage Pay to provide credit card payments.