Price Comparison Script

Hi

I need a full managed script in PHP for price comparison.
similar to pricegrabber.com , nextag.com shopzilla.com etc

need as well a seperate full managed script similar to epinion.com -to be able to intergrade to the price comparison one-
I need them fully customizable for all possible categories
includes books etc ... to be able to get input from datafeeds and also from grabbing and fetching from other sites -through spider-

seperate quote for each of the above plz

PM me your offers with prices. Try to keep the costs low :)

unable to send pm

for some reason the pm doesnt work probably because its my first time over here.... try to send all quotes at the following address

kgpgroup (AT) gmail DOT com

thank you in advance and apologize for the incovenience caused