Looking to save some money this week? Stick with these retailers.

Cyber Monday sales are expected to hit $3 billion this year. It's the first time the one-day sales have been expected reach this mark. It's the highest mark in e-commerce history.

WalletHub took an in-depth look at various online retailers to determine which ones are giving the biggest discounts. They surveyed 3, 128 deals from 30 of the largest retailers in the U.S.

The best retailers for Cyber Monday and throughout Cyber Week along with the amount you'll save:

1. Groupon ... 62%

2. Belk ... 59%

3. Bon-Ton ... 56%

4. JCPenny ... 53%

5. Macy's ... 52%

6. eBay ... 50%

7. Kohl's ... 50%

8. Sears ... 49%

9. Amazon ... 42%

10. Kmart ... 40%

When WalletHub broke it down into categories, they found jewelry has the greatest discount at around 56 percent. The overall average discount is 36 percent so if you're not getting at least this amount off, then you're not getting the best deal.

Happy shopping!

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