Our first wordpress ecommerce plugin comparison, a while ago, is getting outdated quickly as new solutions come to the market. It is now obvious that professionnal wordpress ecommerce is possible, with functions that come near to magento or prestashop, first one being costly and sercond one being not so customizable. Well wordpress solutions are now mature and I would suggest to investigate those who rely on custom post type, as this guarantees long term compatibility with wordpress evolution and plugins.
Enter wp shopified ( http://www.wp-shopified.com/)
wp shopified costs less than 50$ and for that price you get a codebase that is tighlty integrated into core features of wordpress :
- products are wordpress custom post types
- wordpress user base
- menu is generated with worpdress menu system
- thumbnails are generated with worpdress core functions