Simple WP Shopping Cart Plugin

We have a Wordpress website which currently has a shopping cart plugin. We want a simple custom Wordpress shop plug in creating so that we can customise the checkout process in-line with our designs. We only have three products so it can be very simple. We just want to be able to create a ‘Product’ which is just a title and a price and then we will manaually create a page for that product and add a ‘add to basket’ button for each product. Visual Mockups for the cart will be provided to the winning bidder. There might be existing pluging which can be customised for this job. Required functionality Add / review products from shopping card Checkout using both Barclays or Paypal (user has option of which one to pay with) Some way of adding new products to the system which can then be added to pages. Must be able to add and remove delivery locations and set delivery prices and number of working days delivery time for each. Top WP menu is removed on checkout pages. Sends them an order confirmation email after payment which also includes an invoice with details of their purchase and the costs and tax.