What We Learned Analyzing Shopify Stores with Catalog Overview

How understanding your product-to-vendor distribution can save thousands in monthly costs

We recently helped a customer who was struggling with how many products by vendor they were carrying—and what they discovered completely changed how they negotiated with suppliers.

Sarah ran a thriving home goods store on Shopify. She had 847 products from what she thought were "maybe a dozen vendors." When we sat down to look at her actual catalog data, she went quiet. Turns out, she was working with 23 different vendors, but three of them—three!—supplied only a single product each. She was maintaining entire vendor relationships, with all the overhead that entails, for products that weren't even bestsellers.

The Challenge: When Your Catalog Becomes a Black Box

I've talked to dozens of merchants who face this exact problem. You start your store lean and focused. Then you add a product here, test a new vendor there, bring in a seasonal collection somewhere else. Before you know it, you're managing a catalog that looks nothing like what you envisioned.

The scariest part? Most merchants have no idea how their products are actually distributed across vendors. They can't answer basic questions like:

Without this visibility, you're essentially flying blind when it comes to vendor strategy. And that costs real money.

What the Data Revealed

When we ran Sarah's store through our Catalog Overview analysis, the picture became crystal clear immediately. The tool breaks down your entire product catalog by vendor, showing you exactly how many SKUs each supplier provides and what percentage of your total catalog they represent.

Here's what Sarah discovered:

Within an hour of reviewing this data, Sarah had a completely different understanding of her business. More importantly, she had a plan.

The Surprising Insight: The 80/20 Rule Applies to Vendors Too

After analyzing catalog data for over 100 Shopify stores, we've noticed a consistent pattern: the Pareto principle shows up everywhere in product-vendor relationships. Typically, 20% of your vendors supply 80% of your products. Sometimes it's even more extreme.

But here's what surprised us: most merchants optimize in exactly the wrong direction.

They spend the most time managing relationships with small vendors—the ones sending frequent emails, requiring custom orders, having unique payment terms. Meanwhile, their largest vendors get treated like commodities. No strategic conversations. No volume negotiations. No partnership development.

When you can actually see your product distribution by vendor, you realize where your leverage really lives. Sarah was spending 3-4 hours weekly managing a vendor who supplied 6 products while never discussing volume discounts with the vendor who supplied 187.

The ROI calculation becomes obvious when you have the data in front of you. If you can negotiate even a 5% better margin on products from your top vendor, that's worth infinitely more than obsessing over a tiny relationship that barely moves the needle.

Taking Action: From Insight to Impact

Armed with her catalog breakdown, Sarah made four strategic moves over the next month:

1. Consolidated the long tail. She identified 11 vendors who each supplied fewer than 5 products. After reviewing sales data (we used our Product Bundle Affinity Analysis to understand which products actually mattered), she eliminated 28 low-performing SKUs and consolidated the remaining products with her major vendors who carried similar items. This alone saved her roughly 6 hours monthly in vendor management.

2. Negotiated with her top 3. She approached her three largest vendors with actual data: "You supply 72% of my catalog and represent X dollars in annual purchases." Two of them immediately offered better terms. One provided extended payment terms that improved her cash flow by $8,000 monthly.

3. Diversified her risk. Recognizing that one vendor controlled 38% of her catalog, she strategically added products from her second and third-tier vendors in the same categories. Within three months, she'd reduced her top vendor concentration to 28% while maintaining the relationship and volume for good pricing.

4. Created a vendor dashboard. She now reviews her catalog distribution quarterly, tracking how vendor relationships evolve over time. When a vendor starts creeping above 30% of her catalog, she knows to diversify. When a vendor falls below 2%, she evaluates whether the relationship is worth maintaining.

Results and Lessons Learned

Six months after that first catalog analysis, Sarah had quantifiable results:

But the biggest lesson? You can't optimize what you can't see.

I've seen this pattern repeat across every store we've analyzed. The merchants who understand their catalog composition—who know their vendor distribution cold—make better decisions. They negotiate better. They manage their time better. They build more resilient businesses.

The ones who are guessing? They're leaving money on the table every single month.

What This Means for Your Store

If you're running a Shopify store with more than a couple of vendors, you probably have opportunities hiding in your catalog data. Maybe you're overpaying a vendor who doesn't realize how much business you give them. Maybe you're spending hours managing relationships that barely impact your bottom line. Maybe you're dangerously concentrated with a single supplier.

The only way to know is to actually look at the data.

Here's what I recommend: start by getting a clear picture of your current state. How many products does each vendor supply? What percentage of your catalog do they represent? Where's your concentration? Where's your fragmentation?

You don't need fancy tools to start (though they help). You could export your product data from Shopify and build a simple pivot table. But if you want to skip the spreadsheet gymnastics, we built the Catalog Overview tool to do exactly this analysis in minutes.

Once you have that visibility, the opportunities become obvious. Trust me—we've seen it happen dozens of times. That first moment when a merchant sees their actual vendor distribution, something clicks. They immediately know what to do next.

Your Turn

Want to see what your catalog looks like broken down by vendor? Curious whether you're in Sarah's situation—managing too many small relationships while missing opportunities with your big ones?

We built the Catalog Overview analysis to answer exactly these questions. It connects directly to your Shopify store and shows you your complete product-to-vendor breakdown in minutes. No spreadsheets, no manual counting, no guesswork.

Try the Catalog Overview Analysis →

Or if you want to dive deeper into how different products in your catalog work together, check out our guide on Product Bundle Affinity Analysis. Understanding which products naturally sell together can inform smarter vendor decisions too.

And if you're new to Shopify analytics and want to understand what's possible, browse our tutorials or book a demo to see how other merchants are using data to transform their vendor relationships.

The insights are sitting in your catalog right now. You just need to look.

Have a vendor strategy story to share? I'd love to hear what you discovered when you first analyzed your catalog distribution. The surprising findings are always the best ones.