price comparison

Hello all , i need a costumised price comparison script. similar to [login to view URL] but better :) . some of the shops(ofline) will be hosted by me. at this stage the script is intended for offline shops but need to be preaperd to deal also with online shops. (refers to optional delivery column). the products will be listed one after the other [login to view URL] what makes it more simple in a diffrent way from [login to view URL] listings which come one after the other will have the same color. the search option need to be sensetive like in the 2 examples up and no as in the following : [login to view URL];q=jvc+505 there you have to be much more specific [login to view URL];q=GZ-MG+505&x=11&y=10paid graphic(or graphic like) banners will apear in the side of the search results . the banners will present the same product or anoter similar product . in the script should be an option to generate a banner from a listing. promoted products should come with special indication (frame,icon or color).when entering a category , relevant promotions (as banners ) need to apear at theside .geograpic orientation (by ip address) is important. need also easy feed of data of products into the dabase (from excell file as example) . Dont want the products to be entered one by one. products data (and maybe image) will be imported from another shopping site as a floating window but with out the price (copyright problem ?)shops can be ranked by me for better location of adds . products will be filtered and sorted by price, product , brand , model , shop . shops login is also nececery . copyright will stay with me. easy instalation for me . and a possible support after product has been done .