Reseller finances
Most reselling advice stops at what sold. These posts cover what was left afterwards: fee structures, cost basis, quarterly tax, payout reconciliation and the margin math that decides whether a flip was worth doing.
The Offer Rejection Pattern: Why Poshmark Offers Get Declined and How to Price to Accept More
Most declined Poshmark offers aren't a buyer problem — they're a pricing structure problem. Here's the floor math that fixes it.
The 1099-K Reconciliation Nightmare: How to Match Gross Sales to Actual Payouts (Before Tax Day)
Your 1099-K shows $42,318. Your bank shows $34,900. Neither number is wrong — here's the exact reconciliation that closes the gap.
The Slow-Moving SKU Deep Dive: When to Keep an Item Listed and When to Pull It (Before the Holding Cost Explodes)
A concrete framework for how long to keep a slow-selling item listed on eBay before holding cost eats more than the sale would return.
The Variance Audit: Why Your Real Margins Don't Match Your Estimated Margins (And Where the Gap Hides)
Your spreadsheet says 42% margin. Your bank account says 28%. Here's the variance audit that finds exactly where the gap hides.
The Seasonal Price Floor: Why Winter Coats in Summer Require a Different Pricing Logic
Comping a winter coat against December sold prices in July gives you a fake number. Here's the price floor formula that actually accounts for holding cost.
The Partial Refund Trap: When Poshmark and Mercari Split Payouts and Hide the Deduction
Poshmark and Mercari don't refund their commission when you issue a partial refund — you eat the full deduction. Here's the real math.
Mercari Shipping Weight Overages: How They Eat Profit and How to Weigh Like a Pro
A mercari shipping weight overage can quietly cost $1,000+ a year. Here's how the deduction works and how to weigh every package like a pro.
The Holdover Item Audit: How to Spot Dead Inventory Before It Wastes Another Quarter
A quarterly holdover audit flags items past 90 days, calculates real holding cost, and forces a reprice-or-liquidate decision before margin disappears.
The Spreadsheet Debt: When Your Tracking System Costs More Than the Software Solution
Spreadsheets feel free until you count the hours. Here's the real spreadsheet cost per item tracking versus reseller software math.
Marketplace Junk Fees Explained: How Unmasking Hidden Charges Saves $500+ Per Month
eBay, Poshmark, and Mercari fees run 13-25% of a sale once you count processing, shipping shortfalls, and tool subscriptions — here's the real math.
The Hidden Tax Bill: How Much Quarterly Estimated Tax Do Clothing Resellers Owe?
Most clothing resellers owe 25-30% of net profit in quarterly estimated tax. Here's the exact math, the Form 1040-ES steps, and how to dodge the underpayment penalty.
The Dead Season Strategy: How to Keep Inventory Moving When Clothing Sales Slow
When sell-through drops, the fix isn't waiting it out — it's tiered clearance pricing, cross-seasonal listing, and freeing cash before next season's sourcing.
Chargebacks vs. Returns: Which Costs More and How to Prevent Both
A chargeback usually costs more than a return: you lose the item, the payment, and a $15-25 fee. Here's the math and how to prevent both.
The Cost Basis Problem: How Resellers Hide Real COGS and Overpay Taxes
Most resellers log only the purchase price as COGS. Here's the full formula, the hidden costs, and the tax math you're leaving on the table.
Bulk Liquidation Sourcing: How to Spot Real Wholesale Deals vs. the Traps
Most liquidation pallets lose money. Here's how to verify bulk clothing liquidation deals before you pay, and what to check the moment the box arrives.
True Shipping Cost Per Item: Why Your Margin Disappears Between Sale and Payout
Most resellers only count the label. Here's how to calculate shipping cost per item including packaging, labor, and returns — and what it's actually costing your margin.
Cost Per Listing: Why Some Resellers Spend $2 Per Item and Others Spend $0.20
Cost per listing isn't a platform fee — it's your time plus materials plus tools. Here's the formula and the math behind $2 vs $0.20 per item.
Inventory Turnover Math: Why Your Slow-Moving Items Are Costing You More Than You Think
A $22 flannel that sits 180 days isn't a $22 asset anymore. Here's how to calculate inventory turnover rate and find the items quietly draining your margin.
How to Reconcile Payouts Across Multiple Platforms Without a Spreadsheet Meltdown: A Step-by-Step Workflow
Match every sale to its payout line weekly, not at month-end. A ten-step, order-level workflow for eBay, Poshmark, and Mercari that surfaces discrepancies fast.
The True Cost of a Thrift Stop: How to Calculate ROI Per Location and Route Them Like a Pro
Your favorite thrift store may be your worst performer. Learn to calculate ROI per location with drive, time, and processing costs, then route stops by tier.