Is that sale really saving you money this holiday season? Here's are some things to know

When you see a sale this holiday season that looks too good to pass up, you have to take advantage of it, right?

That's exactly what retailers are hoping you'll do, but there could be deeper discounts out there.

For example, if an item looks like it's on a deep discount, don't immediately assume you're getting a good deal.

Researchers say the original cost listed for an item is often not real. Instead, they claim it may be there to trick you into thinking you're getting a major discount.

One way to not fall into that trap is to search for the same item online to see what other retailers are selling the product for.

Another effective way retailers can make shoppers panic-buy is when websites use a countdown clock or advertise that they're having the biggest sale of the season. While that may seem like the case, researchers point out the entire holiday season is filled with sales - so don't feel compelled to buy something you might not need just to get the discount price before the deadline.

Ever buy something you didn't necessarily need in order to qualify for free shipping? Experts say that's a common retail tactic to get you to spend more.

The same can be said for gift sets. Even though you're getting several small items bundled in one cute package, you may not need or use everything in it - causing you to waste money simply because of the appealing packaging.