Want to know how to stay on top of the best deals on Amazon? Tech expert Kim Komando offers three ways to find them.

Here’s some trivia for you: Amazon has more than 2 million sellers. That’s almost the entire population of Houston, Texas, all clambering to sell you things. Amazon has become the largest and most versatile marketplace in world history, and you’re almost guaranteed to find the item you’re seeking.

But when you’re dealing with 2 million faceless merchants, you have to be careful. You may think you’ve found a bargain, but then you’ll find the same item for significantly less. Some of these digital storefronts are misleading, as are their wares.

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Here are three little-known tactics that many shoppers find useful, which can both boost your savings and safeguard your satisfaction.

1. Price tracking tools

In brick-and-mortar stores, many shoppers don’t take the price tag at face value. We assume that there’s a deeper discount than the one advertised. We find an expensive outfit, we frown at the label, and we turn to the salesperson. “I shop here a lot,” we say. “Can I get another 10% off?”

This kind of haggling becomes even more important when you’re buying a big-ticket item like a refrigerator or car. You might like the price, but when the dealer doesn’t offer you free shipping or a complimentary warranty, you say you’re going to walk out. These are both common tactics among seasoned shoppers.

Of course, that’s a little tougher to do when you’re shopping online. You can’t easily find a customer service rep. Fortunately, there are loads of price-tracking tools online, like CamelCamelCamel and Keepa.

CamelCamelCamel works in much the same way as Keepa. When you’re shopping on Amazon, you can go to CamelCamelCamel to get a price history on that specific product. You may discover that the deep discount you think you’re getting isn’t a discount at all.

Or, better yet, set up an alert for something you want to buy. CamelCamelCamel and other price trackers will let you know when the price drops.

2. Spot fake reviews

Amazon reviews are tricky because it’s so easy to post a fake one. When you find deep discounts, these positive remarks can push you over the edge.

You think to…