Products Listing + Shopping Cart using php/codeigniter

We are using php/codeigniter for our web application. Kindly please find the design as per attachment. We need a customize cart which is like lookup form which have to two portions. 1) Upper portion like lokup form (search, filtering product group, category then product code (sku). This will firstly display all product group name with image, when click on it, it will expand display its category name with image and further expand on the category will be product code with image (sku code). Filtering or search either on product group, category or product code. Once search, it will display that particular product group, category or product code. 2) Down portion is like GoCart (shopping Cart) where whatever product (sku) selected from upper portion will be added to cart (down portion),qty, price. The sequence of the information here is product image, product code (sku code), option field (size, colour, unit of measurement like KG, Meter), qty, price, total. Checkout function will copy all the product selected information and particular into a calling form jqgrid. If you have the sample or similar sample, please allow me to take a look and will discuss in more details. Let me know the price quote and man-day. Thank you.