ecommerce site - backend

We require a site for a small gift shop, with around 200 products, with the ability to add more at a later stage. We have a design for the site (can provide PSDs) and payment processing will via our WorldPay account. The site should be database driven, preferably [login to view URL], with a simple, browser-based interface for administration, to maintain the site, update content, product details, add new products, etc. The site needs to display product information such as description, dimensions, photo, price, postage & packing, etc. Please provide quotes and timescales for this project, including URLs of similar projects you have completed. Thank you.