Calculators & templates
Sourcing guide
Garage Sale Sourcing: Tips from Experienced Flippers
A field-tested playbook for garage sale sourcing: route planning, negotiation language, the two-tier triage that keeps your truck full of profitable items, and the categories experienced flippers avoid.
Inventr app
Getting Started with Inventr: A First-Week Walkthrough
A practical first-week walkthrough of the Inventr app for resellers: setup, item entry, sales tracking, and the small habits that turn the app from a download into a real inventory system.
Break-even calculator
How Store Commission Affects Your Bottom Line
A clear-headed look at how booth and consignment-store commission rates compound with rent, fees, and shrinkage to set the real break-even number every seller needs to know.
Break-even calculator
How to Calculate Booth Break-Even (Real Formula)
The right formula for booth break-even with commission, fees, and COGS baked in—plus a worked example, the line items most sellers forget, and the monthly target every booth needs.
Profit calculator
How to Calculate Your True Reselling Profit
The full reseller profit formula with every cost line that belongs in it: landed COGS, platform fees, shipping under/over, supplies, mileage, labor, and the labor-adjusted hourly rate that matters more than gross.
Sell-through calculator
How to Improve Your Booth's Sell-Through Rate
Eight specific levers that move sell-through rate for booth, closet, and online resellers: markdown cadence, listing refreshes, category mix, photo quality, and what to do when nothing on your shelf is moving.
Photo checklist
How to Photograph Resale Items Like a Pro
Lighting, framing, backgrounds, and the small habits that turn phone photos into listing photos that convert. A practical setup guide for resellers under $100 in gear.
P&L template
How to Read Your P&L for Better Decisions
Reading a reseller P&L beyond the bottom line: the ratios that matter, the trends to watch month-over-month, and the specific signals that should change your sourcing, pricing, or channel mix.
Sourcing guide
How to Research an Item's Value in 60 Seconds
A repeatable 60-second sourcing triage: which tabs to open, which filters matter, and how to decide buy / pass without spiraling into 20-minute price hunts on every garage-sale shelf.
Sourcing guide
How to Spot Valuable Vintage Clothing
A field guide to vintage clothing sourcing: tag generations, fabric clues, construction tells, and the decade-by-decade brand signals that separate $5 t-shirts from $150 ones.
Sell-through calculator
Inventory Aging: The Silent Profit Killer
How inventory aging quietly compounds storage cost, opportunity cost, and emotional sunk cost into a margin drain most resellers don't see—plus the aging-bucket discipline that fixes it.
Inventr app
Inventr vs Spreadsheets: Why Resellers Are Switching
A candid comparison of spreadsheet inventory tracking and the Inventr app for resellers: where spreadsheets still shine, where they break down, and the moment most sellers know it's time to switch.
P&L template
Operating Expenses Every Booth Seller Should Track
A categorized expense map for antique-mall and consignment booth sellers: rent, commissions, supplies, mileage, depreciation, and the easy-to-miss costs that quietly eat margin every month.
Photo checklist
Photographing Clothing for Online Resale
A practical clothing photo workflow for resellers: the seven shots every listing needs, lighting setup on a budget, flaw documentation that prevents disputes, and the small habits that triple click-through.
Profit calculator
Platform Fee Comparison: eBay vs Poshmark vs Mercari
A side-by-side fee breakdown of eBay, Poshmark, and Mercari with worked examples at $10, $25, $60, and $150 price points—plus which platform actually nets you more for a given item.
Tax checklist
Reseller Tax Basics: What You Actually Owe
A plain-English tax primer for resellers: when reselling becomes a business, which expenses are deductible, when 1099-K thresholds apply, and the year-round records that prevent April panic.
Sourcing guide
The Best Things to Flip from Thrift Stores
A working list of the categories that actually pay at thrift stores in 2026: vintage clothing, hand tools, glassware, books, electronics, and the bands experienced flippers use to grade buy-pass decisions.
Photo checklist
The Photos Every Listing Needs
The minimum photo set every resale listing should have across clothing, hardgoods, electronics, and collectibles—plus the order to shoot them in so you inspect the item while you photograph it.
Break-even calculator
The True Cost of Running a Consignment Booth
A full accounting of what it actually costs to run a consignment or antique-mall booth: rent, commission, supplies, mileage, time, opportunity cost—plus the categories most sellers ignore until they hurt.
P&L template
What Is a P&L Statement (And Why Resellers Need One)
P&L statements explained in plain English for resellers: what each section means, how COGS and gross profit work, why a real P&L beats a sales report, and how to set up your first one this week.
Tax checklist
What Is Schedule C and Why Resellers File One
A practical walkthrough of Schedule C for resellers: what each section means, how COGS is calculated, the line items most resellers miss, and how to think about the form before tax software asks you about it.
Sell-through calculator
What Is Sell-Through Rate and Why It Matters
Sell-through rate explained for resellers and booth sellers: the definition, the math, realistic benchmarks by category, and why this single number predicts cash flow more honestly than gross sales.
Profit calculator
Why Revenue Isn't Profit
A worked example for resellers on why gross sales mislead and net profit is the only number worth optimizing—plus the four cost layers that quietly turn a 'good month' into a break-even one.
Online platforms
eBay
eBay Store vs No Store: When the Subscription Actually Pays
A reseller's spreadsheet-grade breakdown of when an eBay Store subscription pays for itself, with month-by-month math across Starter, Basic, and Premium tiers.
Etsy
Etsy's 20-Year Vintage Rule: What You Can (and Can't) List
Etsy requires vintage items to be at least 20 years old. Here's how the rule actually gets enforced, what trips resellers up, and a practical dating playbook for booth and online sellers.
Facebook Marketplace
Facebook Marketplace Furniture Flips: The Margin Reality
Twelve real furniture flips through Facebook Marketplace—purchase, refinishing, sale price, hours, and hourly profit—plus which styles pencil out and which waste gas.
Mercari
Mercari vs Poshmark: Where Should You List First?
A side-by-side look at Mercari and Poshmark for clothing and accessories—fees, buyer behavior, velocity, time cost, and a practical matrix for which platform to list first.
Poshmark
Poshmark Sharing: How Many Hours Actually Move the Needle?
A six-week closet experiment on Poshmark sharing cadence—hours per week vs sales lift, sell-through, and where extra sharing stops paying for itself.
Whatnot
Whatnot Live Selling: The Real Economics Behind a Show
Ten Whatnot shows broken down—GMV, fees, Boost spend, prep time, and dollars per hour—plus where new live sellers leak margin in fast auctions.
Niches
Toys & collectibles
Funko Pop Flipping: Is It Still Worth It in 2026?
A 2026 reality check on Funko flipping—average resale collapse vs pockets that still move, with tier-by-tier verdicts and aging discipline for slow sellers.
Vintage clothing
How to Identify a Valuable Vintage Band Tee in 30 Seconds
A fast triage guide for vintage band T-shirts—tag era cues, screen ink tells, blank identification, and a tiered resale map with bootleg warnings.
Books
Scanning Books for Resale: Which Apps Actually Pay Off?
ScoutIQ vs Scoutly vs Bookscouter vs the Amazon Seller app—cost, signals, offline mode, and the monthly scan volume where subscriptions break even.