5 Things to Never Buy at Sam’s Club

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Sam’s Club offers deep discounts on hundreds of items. However, you may want to avoid these five. 

It’s easy to go wild while shopping at Sam’s Club. After all, there are new things to see and buy every time you walk into the warehouse store. And while many purchases are spot-on, some only make sense if you go in with a plan. Here are five things it rarely makes sense to buy at Sam’s Club.

1. Huge containers of anything

If you’re excited by the idea of purchasing a one-gallon container of mayonnaise, you’re my kind of person. However, it may not be the best idea, particularly if you’re unsure how long it will take to consume a container of mayonnaise as large as a newborn baby.

While there are dueling expert opinions on the matter, Dr. Karen Latimer is quoted in EatDelights as saying that a jar of mayonnaise can last for months if left unopened and stored away from sunlight. However, once that jar is opened and refrigerated, you have between two and three months to ensure it’s consumed. And if you accidentally leave it out for eight hours? Prepare to toss it.

In short, unless you’re running a school cafeteria, a massive quantity of mayo may not be a good buy. It’s easier to save money on groceries if you’re willing to give up mega-sized products.

2. Fresh produce

Every time I walk into a warehouse store, I rack my brain to figure out who would benefit from purchasing the fresh produce. It’s colorful and looks supremely healthy, but you can’t just pick up two or three tomatoes or apples.

So, unless you’re throwing a huge party and need enough avocados to put a bowl of guacamole on every table, or you’re a summer camp director and know the kids will tear through 10 pounds of onions with their burgers, you’ll probably save money by picking up the actual quantity of produce you need at your local farmer’s market or grocery store.

Given that an estimated 20% of the food we buy goes to waste, making an extra stop could be worth the money.

3. Sunscreen

Summer is upon us, and we all know better than to allow our skin to burn in the midday sun. Sunscreen is essential, but unfortunately, it does expire. According to Mayo Clinic, we have 36 months to use sunscreen from the time it’s manufactured. The active ingredients will break down faster if exposed to excessive heat or direct sun.

Picking up a three-pack of sunscreen as you browse your local Sam’s Club may seem like you’re saving money.. However, if you still find yourself squeezing sunscreen from one of those bottles three years later, you’re essentially putting lotion on your body and expecting it to protect you from the elements.

4. Vitamins and over-the-counter medicines

One of the things that make vitamins and over-the-counter medicines so attractive at Sam’s Club is how much less you have to pay per unit. After all, the less you spend, the more money you’ll have to put away in a savings account, right? It’s not quite that simple.

Let’s say you need to pick up Bayer Low Dose Aspirin. At Target, you’ll pay between $0.05 and $0.06 per tablet. But at Sam’s Club, you’ll pay only $0.03 per tablet. In this situation, there’s no doubt that Sam’s offers the best bargain. According to Bayer, aspirin remains 100% effective for up to four years, and you’ll probably use an entire bottle of aspirin in that time.

However, it can be tough to determine when other products in the pharmacy department are due to expire. The Food & Drug Administration does not require vitamin manufacturers to put expiration dates on their products. While some manufacturers do so willingly, it’s not something you can count on.

For example, if you were to pick up a 400 count bottle of Vitamin C + Zinc 500 mg at Sam’s Club today, you’d pay $0.04 per capsule. Here’s the problem: A Brazilian Journal of Pharmaceutical Sciences study found that 92% of vitamin C supplements lose efficacy after 12 months of storage. But unless you know that in advance, you don’t know if you’re getting an actual bargain.

5. Diapers and toilet paper

Going out of your way to purchase either diapers or toilet paper at Sam’s Club may cost you more than it’s worth. We all use toilet paper. Retailers know that, so they frequently discount toilet paper to lure shoppers into their stores. Chances are, you’ll score a deeper discount by purchasing TP when it’s on sale at your local market. You can compound the savings by using a coupon.

The same is true of diapers. Today, the cost of Member’s Mark Newborn Diapers comes out to $0.16 per diaper. At the same time, Target’s Up & Up Newborn Diapers sell for a little less than $0.14 per diaper. It’s not a huge difference, but the savings add up when you consider how many of those things you go through while a child is young.

By determining what constitutes a good buy and which products you want to avoid before walking into a Sam’s Club, you can spend less and keep more in your bank account.

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The Ascent does not cover all offers on the market. Editorial content from The Ascent is separate from The Motley Fool editorial content and is created by a different analyst team.Dana George has positions in Apple and Target. The Motley Fool has positions in and recommends Apple and Target. The Motley Fool has a disclosure policy.

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