Before you pay for the presents you've placed in your virtual cart, visit shopzilla.com, the shopping search engine that lets you quickly compare prices from different online stores that sell the item you've chosen. Type in the product you're buying and you'll be given a list of merchants currently selling it. If the price you're about to pay isn't the cheapest, surf over to the other stores to check out their offers. Are they offering free shipping? Is their return policy as good as the first merchant's? Are they reputable? Read shopzilla.com's merchant reviews for answers to all of these questions before you submit your order.