This page is actually an advice and web links page.  These links are sites that I use everyday so they are all safe but, I cannot guarantee that the site has not changed so you are on you own.

SHOPPING:

PriceGrabber.com : My first choice for competitive list of items based on price.

PC Part Picker.com : great place to get a competitive list of items based on price.

ResellerRatings.com : get reviews for online web sites.  Good way to double check the online shop you are dealing with will not rip you off and give good quality items.