The Google search engine www.google.com has put up a beta version of something called Froggle. With this you can shop the internet for a particular item and get page after pages of links, prices and pictures to choose from. For example I searched ON30 and got 10 pages of specific items listed for sale by various web merchants. I tried HON3 and got an even better result. I them typed in shay locomotive and got several pages of shays for sale or described by various web based hobby shops. Kinda interesting, give it a try.