CS CART customization (php)

I am in need of customizing php web shop cs cart ([login to view URL]). So anyone with experience in working with it is welcome. Also, if you do not have one, that is not a problem if you know how to program in php. Customization: 1. They want to compare two and more different products and their prices! Generally this would work, but cs-cart compares only “main” price, and not those in product options, while they are using only prices in product options. therefore when they compare product they get nothing. so we need to fix that somehow. I hope I made it clear :). 2. What would be great if in administration when you go to manage products, and when you get a list of products, you also get a list of related prices in product options, so that those prices can be easily altered for all products at once, instead of changing them product by product.