Oscommerce PHP Work

We have different suppliers which provide us with datafeeds each day. We download those datafeeds into SQL tables. Our systems are already in place which will set the price to $0 if the product does not appear in any of the datafeeds. We require a page that will allow us to choose any category (and top level category) which will display all products that have there price set to $0 for all suppliers. Next to each product will be a checkbox which is we tick will delete the product from the database. We also require a single checkbox that once ticked will tick all boxes at once. This work must be optomized. This page when opened will list all products immediately. We do not want a script that will run and check each product individually.