The 80/20 Rule Destroyed by a $25 Inventory Decision

A Gas Station Lost $7,000 in Annual Revenue Because They Didn’t Stock a $10 Gas Can

The 80/20 is one of the best strategies in business—until it’s applied wrong and costs you money and customers forever. A gas station made a $25 inventory decision that seemed smart on a spreadsheet and lost $7,000 in annual revenue from one customer alone. They chose to eliminate a “B product” without asking whether that product keeps “A customers” happy. You cannot manage the 80/20 off a spreadsheet. The logic filter is everything.

The Gas Station That Lost Thousands

Todd Hagopian shares a real-world 80/20 failure he experienced firsthand. Last night, completely out of gas, I walked into a gas station to buy a portable gas can. The station didn’t have any. The attendant looked at me like I had three heads and said, “We don’t sell those here.”

I started thinking through the 80/20 lens. They probably stocked five or six of these $5-$10 items, nobody ever bought them, and someone decided it was a bad inventory decision. Makes sense on a spreadsheet.

But here’s what the spreadsheet missed: you’re a gas station. People come there when they’re low on gas or it’s an emergency. A certain number of people rely on you to give them gas when they’re low. A subset of those people rely on you when they’re empty.

Had I run out of gas two miles before that station and walked there, I would have had to walk two more miles to the next station—which had six or seven gas cans sitting on top of a random rack, not taking up valuable inventory space, priced at $30-40 for something that costs $2-3 to make.

To have no solution for someone who walked two miles or took a $30 Uber other than “sorry, go to the competitor”—that loses you a customer for life.

The Math They Never Calculated

I added it up in my head. That gas station probably lost 1,500 gallons of gas from me in the next year. Probably lost 10 cups of coffee a week. I buy chargers there, food there, everything there because I’m there all the time. That’s approximately $7,000 in revenue from one customer—from a $25 inventory decision.

Not to mention if I had walked there and was furious, I’d be telling everybody. The word-of-mouth damage alone could multiply that loss tenfold. And they drove me right to the competitor who had six gas cans sitting there waiting.

This is where 80/20 goes catastrophically wrong: when you intentionally piss off an A customer because you don’t want to deal with a B product.

The Logic Filter That Saves the 80/20

You cannot manage the 80/20 off a spreadsheet alone. The logic filter must follow the Excel analysis. It’s extraordinarily important.

The logic filter for that gas station should have been simple: You’re a gas station. You need to provide emergency gas. Not having a solution for someone who walked or Ubered to your station in an emergency is unacceptable.

The gas can is a B product—you won’t sell a lot, won’t make much money, kind of a pain to keep on the shelf. But it causes you no pain. It’s not like installing a new sub shop or coffee stand. It sits in a place that doesn’t affect your business.

Your options for B products are: outsource them, charge more, or kill them. This station chose to kill—and they’ll lose tens of thousands in revenue because of a $25 inventory decision.

Logic Filter Applications Beyond the Gas Station

The logic filter can take many forms.

Do we need this random small item to keep big customers happy? That gas can exists for A customers having emergencies, not for profit margin optimization. The B product serves the A customer relationship.

How different is the SKU from other SKUs? If customization comes at the very end of the production line and you can build 90% of the way there before pulling the trigger—that’s not necessarily a whole new SKU. Treat it differently than something designed from scratch.

Can you turn it into innovation? That gas station could charge $100 for the can—if someone needs it, they’ll pay. They could create a subscription: $50-100 per year for 2-gallon gas delivery within 15 miles. A thousand people might pay for that service and you’d only deliver two cans of gas. They could partner with delivery services. Turn the B product into a profit center through orthodoxy smashing.

The opposite argument works too: if the customization isn’t that different, move customers to the base SKU. I’ve made that argument hundreds of times. But the logic filter determines which argument applies.

This is why many people hate the 80/20—they feel it doesn’t cover these nuances. It does, but only if you apply the logic filter after the spreadsheet analysis.

Frequently Asked Questions

Why do companies fail at implementing the 80/20 correctly?

They manage purely off spreadsheets without applying a logic filter. A product showing low volume and low margin looks like an obvious cut—until you realize it keeps your best customers from walking to competitors. The 80/20 analysis identifies candidates for action; the logic filter determines which action makes sense given your business context and customer relationships.

What is the logic filter in 80/20 implementation?

The logic filter asks context-specific questions after spreadsheet analysis: Does this B product keep A customers happy? Does eliminating this drive customers to competitors? What’s the true cost of not having this solution? For a gas station, the logic filter is simple: you provide emergency gas, so you must have solutions for people who are completely empty.

How do you know when a B product should be kept versus eliminated?

Ask whether the B product serves A customer relationships. If an A customer needs that product in an emergency and you don’t have it, you’ve lost far more than the product’s margin—you’ve lost the entire customer relationship. Also consider whether the product causes operational pain. Gas cans sitting on a top rack cause zero pain while providing emergency solutions.

How can you turn B products into profit centers?

Instead of eliminating, try charging premium prices—if someone needs it, they’ll pay. Create subscription services around the product. Partner with delivery services. One gas station could offer $50-100 annual subscriptions for emergency gas delivery, collect thousands in subscription revenue, and rarely need to actually deliver. Orthodoxy smashing turns cost centers into profit centers.

When should customized products be treated differently in 80/20 analysis?

If customization happens at the end of the production line and you can build 90% before the custom step, it’s not truly a separate SKU—it’s a base SKU with a finishing option. Treat these differently than products requiring complete design-from-scratch processes. The logic filter distinguishes between customization that flows naturally and customization that creates genuine complexity.

About This Podcaster

Todd Hagopian has transformed businesses at Berkshire Hathaway, Illinois Tool Works, Whirlpool Corporation, and JBT Marel, selling over $3 billion of products to Walmart, Costco, Lowes, Home Depot, Kroger, Pepsi, Coca Cola and many more. As Founder of the Stagnation Intelligence Agency and former Leadership Council member at the National Small Business Association, he is the authority on Stagnation Syndrome and corporate transformation. Hagopian doubled his own manufacturing business acquisition value in just 3 years before selling, while generating $2B in shareholder value across his corporate roles. He has written more than 1,000 pages of books, white papers, implementation guides, and masterclasses on Corporate Stagnation Transformation, earning recognition from Manufacturing Insights Magazine and Literary Titan. Featured on Fox Business, Forbes.com, OAN, Washington Post, NPR and many other outlets, his transformative strategies reach over 100,000 social media followers and generate 15,000,000+ annual impressions. As an award-winning speaker, he delivered the results of a Deloitte study at the international auto show, and other conferences. Hagopian also holds an MBA from Michigan State University with a dual-major in Marketing and Finance.

About This Episode

Host: Todd Hagopian
Organization: Stagnation Assassins
Episode: The 80/20 Logic Filter—When Spreadsheets Destroy Customer Relationships
Key Insight: A $25 inventory decision to eliminate gas cans cost one gas station $7,000+ in annual revenue from a single customer—the logic filter must follow the spreadsheet

Your 80/20 logic filter assignment starts now. Review your recent product or customer elimination decisions. For each B product you’ve killed or are considering killing, ask: Does this product keep A customers happy? What happens when an A customer needs this and we don’t have it? Are we driving them to competitors? Then identify B products you could transform through premium pricing, subscriptions, or partnerships instead of elimination. Visit toddhagopian.com for the complete 80/20 Matrix with logic filter implementation. What $25 decision is costing you thousands?