I know this is technical, so sorry for the CL post, but i don't know where else to put this.

Just wondering if it's possible write a script that automatically searches multiple chosen sites for comparison shopping. The place i work does trade-ins on instruments and we constantly have to go to 5-10 sites to find a specific instruments price values; where if i could get a script that aggregated search results with images and pricing on one or 2 pages, we could really speed things up.

So in essence, we go to a private portal where an employee can type a model number into one search box and get results from ebay, musiciansfriend, froogle, and whatever else site comes down the pike....

Any idea on how to go about this?