I added a little Reevoo application to G-Portal (http://da.gp from your mobile phone), since they currently only provide a version of the iPhone.
It lets you search for products by keyword, shows the top 10 results or so, and allows you to get detailed information on what other people had to say about the product. It also shows the cheapest price available online through Reevoo's partners (which include Amazon, Play.com, and others, so it's likely to be a reasonable guide-price).
It's really useful, because it allows you to quickly get useful information on possible bargains on the high-street.
Just visit G-Portal on your phone and look under the 'Shopping' section.