Setup a shopping portal.
1) Price comparison script based on phpmysql and should be similar in features such as [url removed, login to view]
2) Shopping cart with mulitple vendors able to signup seperately. All paymments to go thru my store. One feature of the shopping marketplace will be weekly specials. Upon recipt of bids, I will show you a sample page as to what I am looking for on the first page of this portal. OS COmmerce GPL is an option if you can customize the looks and functionality.