Modify an Interspire shopping cart.

Our company is looking for a developer to modify an Interspire shopping cart with various modifications. The modifications required are: 1. Creation of a bot to scrape a set of prices from another website and feed those prices into our site. 2. Apply a formula to the scraped prices that can be uses to populate the prices on our site. (formula to be supplied) 3. Have a manual override to the automatically scraped prices, so a price can be fixed. 4. Have the ability to show different members different prices (like setting up user groups) 5. Integrate wordpress into the site for blogging purposes. (re skinning wordpress to look like the shopping cart) and adding a tab in the cart so customers can get to the blog. 6. Add a home page slide show. 7. Add the ability to close down certain categories of the shopping cart automatically on a 7 day timer bases with a manual override built in. 8. Add an admin defined % to Paypal and credit card payments.