E-commerce site

We require an e-commerce solution for a medium sized business. The solution must allow for products definitions to be dynamically administered and for products to be grouped together with text and pictures etc. There will also be a small (approx 10 pages) of dynamic content about the company. These pages should also be able to be modified by an browser-based administration system. The general design must be snazzy high-impact but without any use of flash. Users must be able to create their own accounts in the system, and the administrator must be able to log on an view/amend the status of all orders and also orders just for specific users. Initially, the shop will not support online transactions with credit cards but will instead send secure emails to us for offline processing. In the long term we would like to move to support automatic online transactions with credit cards, so please quote for both methods. The site must also be designed in a modular way since it will then be used for another e-commerce site. So it will need to be able to swap colours, fonts, front-ends, and product back-ends with ease. A solid knowledge in databases is required together with expertise coding modular reusable code. We would also like you to provide hosting for the system. Please send us details of similar work (URL's if possible) and estimate of costs with timescale. Where possible please quote individual components. Regards