This extension enhance your search comparing with ebay / amazon
Demo :- http://gsptechnologies.com/demos/1564/comparison/ search any product say like macbook
Admin:- http://gsptechnologies.com/demos/1564/comparison/admin/ ( admin / password )
For any query or customization email us at firstname.lastname@example.org or skype aditya_web
For customised store you may need to pay extra as per time ..this extension is tested with default opencart setup. Only 1 month support for any bug or issue after that it will be paid service.