If your e-commerce shop is built on Opencart ecommerce Framework; you could install these free extension for better search Engine optimization (SEO) and increased click through rates (CTR) .
The extension inserts micro-data adhering to Google recommended GoodRelations e-commerce vocabulary.
Extensions are available on: http://www.opencart.com/index.php?route=extension/extension&filter_usern...
TransPacific Software : a leader in ecommerce Technologies is firm believer in semantic web and its applications in search technologies. Google has already adopted RDF, GoodRelations and Microdata formats in a big way and Bing, Yahoo followed suit.
Screenshots from Plugin installation
On plugging in GR rich snippets you could test pages on Google's Rich snippet testing tool to view structure data embedded
For installing GR rich Snippet on custom OpenCart themes our free support is available on email@example.com