ecommerce perfume website

Want to make a ecommerce website to sell perfumes. want full integration, can use oscommerce. I had set it up and you can check it at gagagugu.com. I want to make it look more professional and with all the certificates to accept credit cards. Something like [login to view URL] specially when the item displays with one picture for the item and all possible sizes, and a search engine. I want all the items form that website and priced 10% cheaper Let me know how long it will take and if you have done any website that is item based not service website, especially that uses oscommerce or like wise.