According to FatWallet.com, here are the five best things to buy this Memorial Day Weekend, because they have the best sale prices.

1. Mattresses. They're usually cheaper this weekend than any other time of year.

2. Summer clothes. A lot of stores start hyping their summer collections this weekend, and usually have big sales going on.

3. Plane tickets for the summer. Websites like Expedia and Priceline usually offer Memorial Day sales that are awesome.

4. Appliances. The other time to buy them is on Black Friday.

5. Patio furniture and grills. They'll only be a little cheaper in the fall. But if you want to use them this summer, it's worth spending the extra money.

And two things you should never purchase this weekend are laptops and power tools. The best time to buy a laptop is during the back-to-school sales in July. And the best time to buy tools is June, when they go on sale for Father's Day.

Read More at PR Newswire.