Wordpress Plugin to add Product Feeds to Site

The job is to develop a wordpress plugin to take product feeds from our affiliate networks and display the product title, image and price in a grid/gallery format (a simple ecommerce like layout comparable to something like:
http://usa.tommy.com/tommy/browse/subcategory.jsp?categoryId=cat490044&addFacet=9004%3Acat490044
and
http://www.play.com/Search.html?searchstring=&searchtype=allproducts&searchsource=2&searchfilters=ae212{644651}%2bc{600}%2b
and
http://www.cucuu.co.uk/.

There may be two or more feeds with the same product, and in such cases all prices from the different affiliates should be shown. When the price is clicked the user will be taken directly to the product on the affiliates website, while clicking the image will take the user to a new page on our website.

On the main product page displaying a selection of products from a range of different categories would be ideal (like in http://www.cucuu.co.uk/), with a 'see more like these' button that takes the user to a full page displaying all products within a specific category. There should also be a search box and a category selection box/list.

The wordpress plugin will have backend functionality to allow us to:
- input product feeds, with options to add several feeds for an individual product.
- add a category ID, product Title, and Affiliate Name to each feed (this will allow the frontend user view all products within a specific category - the product title to be shown - the price at different affiliates to be shown.
- specify which page on the website the main product gallery is shown (e.g. homepage, products page etc.),
- the number of columns and the number of products to be displayed.
- control over which categories are shown on the main gallery and the number of products displayed.

The plugin must be capable of automatically refreshing the feed data at specified intervals.