Dave Ramsey highlights how warehouse-club “impulse buys” can quietly add up for Costco shoppers

Warehouse clubs are built on a straightforward promise: buy in bulk and pay less per unit. Costco is a well-known example, drawing shoppers with competitive prices across groceries, household essentials and a range of merchandise. But in a new commentary flagged by TheStreet, personal-finance personality Dave Ramsey warned that the same shopping behavior can become expensive when “impulse buys” turn into a habit.

The article’s central claim is that the cost of impulse buying can compound dramatically. The post frames the problem through Ramsey’s lens, suggesting that buying more than you planned to purchase, even when individual items seem reasonably priced, can accumulate into a much larger total over the long run.

Ramsey’s warning is aimed at a specific psychological pattern common at warehouse retailers. The stores often feature one-time “treasure hunt” moments, endcap displays and promotions, all of which can make it feel like shoppers are getting a deal even when they are purchasing items they did not intend to buy. In that setting, a low price per item does not necessarily offset the cost of buying the item in the first place.

The framing also matters because Costco’s model is designed for planned stock-up shopping. Warehouse clubs commonly encourage members to purchase quantities that fit household needs and to return periodically. Ramsey’s point, as reflected in the commentary, is that this model can turn into a budgeting mismatch when shoppers treat every trip as an opportunity to add extras beyond necessities.

Costco’s business context is relevant even if Ramsey is speaking directly to consumers rather than issuing company policy. Like other discount retailers, warehouse clubs depend on high purchase frequency and volume, and they typically benefit when shoppers buy multiple categories during a single trip. In practice, the same store tactics that improve convenience and basket size can also raise the odds of incidental purchases.

TheStreet’s post ties the warning to a dollar figure that is prominently emphasized in the headline, indicating that an impulse-buy habit could cost as much as $108,000 over 14 years. While the underlying math and assumptions are not provided in the accessible research record here, the figure indicates how Ramsey intends listeners to think about long-term compounding costs.

What Costco has disclosed publicly about customer behavior is not reflected in the available material for this story. The commentary itself does not appear to cite company data in the material available to review, and it does not provide specific details on which categories Ramsey believes are most likely to trigger impulsive spending at Costco.

For shoppers, the takeaway is less about Costco’s pricing and more about decision discipline. For companies in the warehouse and discount segment, the implication is that store design and merchandising that increase basket size can also intensify consumer scrutiny, especially from prominent personal-finance voices. The story also underscores that “value” is not only about unit price, but about whether purchases align with a defined plan.