💸 How to Calculate Profit Margins
🧮 Step 1: Know What Goes Into the Sale
To calculate real profit, you need to track everything it cost you to sell the item — not just what you paid for it.
Here’s what to include:
Expense | Example |
🧾 COGS (Cost of Goods Sold) | What you paid at the thrift store or bins |
📦 Shipping Cost (if you paid it) | USPS, UPS, FedEx |
💵 eBay Fees | Around 13–15% of sale price (including shipping) |
📦 Supplies | Poly mailers, boxes, tape, bubble wrap |
🛠️ Optional Extras | Promoted listing fees, cleaning/restoration costs |
✍️ Step 2: Use the Profit Formula
Here’s the simplest Rooted-style formula:
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Profit = Sale Price – (COGS + Fees + Shipping + Supplies)
Then to get your profit margin, use this:
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Profit Margin = (Profit ÷ Sale Price) × 100
📊 Example (Real-World Style):
Let’s say you sold a pair of shoes for $60 on eBay.
Breakdown | Amount |
Sale Price | $60.00 |
COGS | $10.00 |
Shipping (you paid) | $8.50 |
eBay Fees (14.5%) | $8.70 |
Supplies | $0.50 |
Total Costs: $27.70
Profit = $60 – $27.70 = $32.30
Profit Margin = ($32.30 ÷ $60) × 100 = 53.83%
✔️ That’s a solid profit. Rooted in Reselling aims for margins around 50%+ on most items.
📒 Step 3: Track It in a Spreadsheet
Use a simple sheet with these columns:
Item | COGS | Sale Price | Fees | Shipping | Supplies | Net Profit | Margin % |
🧠 Rooted Tip: Track profit per item and average profit across categories. Over time, you’ll learn which types of inventory make the most money — and which to stop buying.
🔄 Bonus: Use Your Margins to Make Better Sourcing Decisions
When you’re out sourcing, mentally run the numbers before buying:
“If I sell this jacket for $40… I’ll pay $6 in fees, $10 in shipping, and I paid $5. That leaves me about $19 profit, or 47.5%. ✅ Worth it.”
If it comes out under 25% margin? Probably not worth your time or storage space.
🧠 Final Thoughts (Rooted-Style)
Profit margins aren’t just for bookkeepers. They’re how resellers stay in business.
- Track it every week.
- Use it to refine your sourcing.
- Drop or rotate inventory that consistently brings in weak returns.
Scaling your store without knowing your margins is like driving blindfolded. RiR doesn’t do that — and neither should you.