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See what similar items sold for on Mercari. Get instant pricing suggestions and profit calculations. MercariPricer - Smart Pricing for Sellers Stop guessing what your Mercari item is worth. Start pricing with data. You find something worth flipping. You check Mercari, see a few active listings, and price yours somewhere in the middle. Maybe it sells, maybe it sits for weeks. You never really know if you left money on the table or priced yourself out of the market. The problem is simple: active listings tell you what people are asking. Sold listings tell you what people are actually paying. And right now, getting that data takes way too much manual work. WHY PRICING ON MERCARI IS SO HARD Mercari does not make it easy to research sold prices. You can filter by "sold" in search, but then you are bouncing between tabs, mentally averaging numbers, and trying to remember what you saw five minutes ago. Here is what most sellers deal with: - No quick way to see average sold prices for similar items - No breakdown of price ranges — just a wall of individual listings - Mental math for fees, shipping, and profit on every single item - No way to know if your price is competitive without a spreadsheet - Different categories have different pricing dynamics, and your gut feel does not scale Most sellers either overprice and wait forever, or underprice and leave profit behind. The ones who do their research spend 10-15 minutes per item clicking through sold results and running numbers manually. MercariPricer automates that entire process. WHAT THIS EXTENSION DOES MercariPricer is a floating panel that appears on any Mercari item page. It reads the listing data already on the page, finds comparable sold items, and gives you pricing intelligence and profit calculations — all without leaving the page you are on. No spreadsheets. No tab-switching. No calculators. Here is what you get: Sold Comps Analysis — Automatically collects recently sold items similar to the one you are viewing. Shows you the average, median, low, and high sold prices so you know exactly where the market sits. Three-Tier Pricing Suggestions — Based on real sold data, the extension gives you three pricing strategies: - Fast Sell: price at the lower quartile to move inventory quickly - Sweet Spot: price between the median and upper quartile for the ideal balance of speed and profit - Premium: price at the upper range when your item has condition or brand advantages Built-In Profit Calculator — Enter your cost of goods and shipping, and see your net profit, margin percentage, and ROI instantly. Mercari's 10% seller fee is calculated automatically. Smart COGS Memory — The extension remembers your cost inputs by category. If you regularly source electronics at a certain price point, it pre-fills that number the next time you view an item in the same category. Stored locally on your device. HOW IT WORKS 1. Install the extension and browse Mercari as you normally do 2. Open any item listing page — the panel appears automatically 3. View the sold comps, pricing suggestions, and profit breakdown 4. Adjust your shipping and cost of goods to see real-time profit calculations 5. Price your listing with confidence That is it. The panel stays out of your way until you need it, and disappears when you navigate away from item pages. WHY A FLOATING PANEL Most pricing tools force you to open a separate tab or dashboard. That breaks your workflow. You lose context when you leave the listing page. MercariPricer sits right next to the listing you are viewing. You see the item, the photos, the description — and the pricing data — all at once. You can drag the panel anywhere on screen, minimize it, or close it entirely. It remembers your preferred position between sessions. COGS TEMPLATES Every reseller knows their numbers are different by category. The margins on clothing are not the same as electronics or collectibles. When you enter a cost of goods for an item, MercariPricer saves that value for the category. Next time you view an item in the same category, it pre-fills your typical cost. You can always override it. This data stays on your device. Nothing is sent to any server. REAL SCENARIOS WHERE THIS HELPS Sourcing at a thrift store: You find a Nike jacket for $8. You pull up a similar listing on Mercari and immediately see that comparable jackets sold for $28-$45. The profit calculator shows $15.20 net after the 10% fee and $7.97 shipping. Worth buying. Deciding between shipping options: You have an item listed at $35. You are not sure if offering free shipping helps it sell faster. Enter $0 shipping vs $11.92 shipping in the calculator and see exactly how each scenario affects your margin. Repricing stale inventory: An item has been sitting for two weeks. Check the sold comps and see that the median sold price is $22 — you listed at $32. The Fast Sell suggestion shows $18-$20 would move it quickly. Now you can decide if the lower price still makes sense for your margins. Evaluating a bulk purchase: Someone offers you 20 handbags for $200. You check a few of the brands on Mercari. The sold comps show an average of $25-$40 each. At $10 per bag cost, your projected profit per unit is $12-$24 after fees. The bulk deal makes financial sense. Setting prices for a new category: You are expanding from clothing into vintage electronics. You have no intuition for pricing. The sold comps give you an instant baseline — no need to spend an hour researching before you list your first item. Comparing condition impact on price: You have a used item and wonder if refurbishing it would justify a higher price. Check the sold comps and compare prices across conditions. If "Like New" items sell for $15 more on average, and your refurb cost is $5, the investment makes sense. WHAT THIS EXTENSION DOES NOT DO - It does not access your Mercari account or seller dashboard - It does not modify any listings or perform any actions on your behalf - It does not send your browsing data to external servers - It does not scrape Mercari — it reads data from the page you are already viewing The only permission it uses: - Storage — saves your panel position, daily usage counter, and COGS templates locally on your device No network requests are made for data collection. All pricing analysis runs locally in your browser. FREE TIER MercariPricer is currently 100% free during our early access phase. You have unlimited access to all features — including sold comps, profit calculators, and pricing suggestions. A premium tier with advanced analytics and unlimited bulk tracking is coming soon for $19.99/mo. For now, enjoy the full tool at no cost! THE MATH BEHIND THE NUMBERS Mercari Fee: sale price x 10% Seller Receives: sale price - Mercari fee Net Profit: seller receives - shipping - cost of goods Margin: net profit / sale price x 100 ROI: net profit / cost of goods x 100 Fast Sell Range: 25th percentile x 0.90 to 25th percentile Sweet Spot Range: median x 0.95 to 75th percentile Premium Range: 75th percentile to 75th percentile x 1.15 No hidden adjustments. No rounding tricks. The same math you would do manually, done instantly. WHO THIS IS FOR - Mercari resellers who want to price items based on actual sold data, not guesswork - Thrift store flippers who need quick go/no-go decisions while sourcing - Side hustlers who sell 5-20 items a month and want to maximize profit per item - Full-time sellers scaling their operation and need faster pricing workflows - Anyone new to Mercari who does not yet have pricing intuition for their category GETTING STARTED Install the extension. Open any item page on Mercari. The panel appears automatically. No account needed. No sign-up. No credit card. Just data-driven pricing decisions.