Market Math Blog

Unpacking the Portland Leather Goods (PLG) resale market with real data, trends, and insights.
Back of a business person surrounded with lots of Question Marks
Resale Strategies

Why Resale Pricing Feels So Confusing

and What Actually Helps I see a lot of frustration around resale pricing, and I think most of it comes down to people using different reference points. Some anchor to retail, some to what they personally paid, and others to one or two listings they remember seeing. That can make pricing feel arbitrary even when sellers are acting in good faith. What helped me most was looking at actual sold

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Leather Ledger dashboard displaying sold resale listings with sale price, sold date, and source labels including Treet, Mercari, and eBay.
Price Insights

Leather Ledger Expands Its Data Sources

Mercari & eBay Now Included If you’ve been exploring the dashboards recently, you may have already noticed an important update. Leather Ledger is now actively pulling sold listing data from Mercari and eBay, alongside Treet, to provide a more complete view of real-world resale pricing and market trends. This marks a meaningful evolution in how Leather Ledger reflects today’s resale landscape. Why expand data sources now? Treet has long served

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Masquerade Triangle Bags
Resale Strategies

How I Price a Bag

Using Real Resale Data The problem with “one number” pricing One of the most common questions I see in resale groups is simple on the surface and surprisingly hard in practice: “What should I price this at?” Most people want to move an item reasonably fast and get a fair price. But resale markets are noisy. Prices fluctuate. Similar items sell for different amounts. And it’s not always obvious which

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Chart Showing December Sales Spike from Treet Promotion
Market Trends

Treet Holiday Promotion Recap

December 22–24 Treet ran a short promotion from December 22 through December 24, offering 10% off for buyers and 120% credit for sellers. From a timing standpoint, this promotion stood out. It launched roughly two weeks after the prior C-Sale, rather than the more typical one-week window, and it ran during a busy holiday week, when buyer attention is often split. The chart below shows daily total sales in the

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Three Portland Leather bags - Satsuma Medium Crossbody, Aqua Large Devan, and Boysenberry Lola, displayed in a row.
Resale Strategies

Thinking About Trading Your Bag?

Here’s How to Do It Safely and Smartly Trading bags is incredibly common this time of year, especially during C-Sales and other high-activity periods when everyone is refreshing their collections. Whether you’re looking to swap for a new color, try a different style, or simply rebalance your lineup, a smart and safe approach makes all the difference. There are two main ways people handle trades in the BST community: 1.

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Deep Water Crossbody with littles
Market Trends

September 2025 Resale Snapshot

What’s Moving on Treet September brought no shortage of activity across both the Bags and Littles markets, with more than 4,800 total items sold between the two dashboards. The numbers reveal strong buyer engagement and clear front-runners among the month’s listings. 2,265 Bags Sold 2,569 Littles Sold Average Price: $84.44 (Bags) / $29.37 (Littles) Top Movers: Bags Dashboard Totes continue to dominate resale activity, taking both of the top two

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Win This Masquerade Montana Tote
Style Spotlights

Leather Ledger Launch Giveaway

Win a Premium Masquerade Montana Tote To celebrate the launch of Leather Ledger, I’m giving back to the PLG community in a big way! One lucky winner will receive a Premium Masquerade Montana Tote from the most recent PLG drop. These sold out in under 2 minutes, and I can’t wait to pass one along to you. About the Bag The Masquerade Montana Tote is one of the most buzzed-about

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Two store sale bags with line chart
Resale Strategies

How to Capitalize When Treet Runs a Sale

If you’ve ever wondered whether Treet’s sitewide sales really move the needle, the numbers from August tell the story loud and clear. Sales skyrocketed to over 400 per day – More than 4x the usual daily volume. 📈 The takeaway? Treet sales don’t just help buyers save 10%. They create a powerful wave of demand that sellers can ride to move inventory faster and earn extra credit boosts. Why Sales

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Pink crossbody and blue tote set on graph background
Price Insights

How to Price Your Bag Quickly

(Without Guessing) If you’ve ever tried to list a bag for sale, you know that while taking photos and writing the description is time consuming, often the hardest part is figuring out the price. Too high and it sits. Too low and you kick yourself for leaving money on the table. Most of us have done the same dance: scroll through old posts in BST groups, search Treet, Poshmark, and

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