Hi Afridi,you can reuse so many feature's of ofbiz to develop your ecommerce product and now for easy checkout ofbiz have one page checkout as well .
you can follow this and reuse the feature as required. http://demo.hotwaxmedia.com/ecommerce/control/main
-- Thanks & Regards, Ravindra Mandre HotWax Media, Inc. http://www.hotwaxmedia.com
