BoekenWebsite.nl (mostly) sells second hand books. This site is built using Drupal 4.7 and several standard modules: e-commerce, flexinode, views and some custom: shipping, payment, management info. It is XHTML Strict, tableless, and source-ordered for SEO friendly design. The site used to work with osCommerce 2.2 but got successfully converted (in product database and design) to Drupal e-commerce which offers a better CMS foundation, better theming, better modularity and more customizations.