Real Cost of Discounts for Sellers

A 10% discount doesn't cost you 10% — it costs much more of your profit.

$
$
%
%
Discount amount$5.00
Revenue after discount$45.00
Platform fee amount$6.75
Profit before discount$22.50
Profit after discount$18.25
Profit reduction-18.9%
Effective discount cost$4.25
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Why a 10% Discount Costs You More Than 10%

When you offer a 10% discount, the discount comes entirely from your profit margin, not from revenue evenly. If your margin is 30%, a 10% discount wipes out a third of your profit. Platform fees make it worse — the platform still charges fees on the original or discounted price, eating further into your margin.

Profit impact = Discount $ × (1 − fee%) ÷ Original profit

Platform Fee Comparison

PlatformTypical FeeFee Calculated On
Etsy6.5% + $0.20Discounted price
Amazon FBA15% + fulfillmentDiscounted price
eBay12.9% + $0.30Discounted price
Shopify2.9% + $0.30Discounted price (payment only)
Faire (wholesale)15–25%Discounted price

When Discounts Make Sense for Sellers

Volume play: If a 10% discount increases unit sales by 20%+, total profit rises despite lower per-unit margin. Clearance: Discounting slow-moving inventory frees up capital and storage costs. Customer acquisition: A first-purchase discount can be worth it if customer lifetime value exceeds the discount cost.

The danger: Training customers to wait for sales. If you discount too often, customers learn to never buy at full price, permanently lowering your effective selling price.

Calculate any price with our 10% Off Calculator →

Frequently Asked Questions

No. Most platforms (Etsy, Amazon, eBay) charge their percentage fee on the actual sale price after discount. So the fee amount is slightly lower, but it's still the same percentage rate. The discount comes entirely from your margin, not from reduced platform fees.
It depends on your margin. If you sell a $50 item with $20 cost and 15% platform fees, your profit is $22.50. A 10% discount ($5) reduces profit to about $18.25 — that's an 18.9% profit reduction from a "10%" discount. The thinner your margin, the more devastating discounts become.
The profit impact = discount percentage ÷ profit margin percentage. With a 30% margin, a 10% discount costs you 33% of your profit. With a 20% margin, it costs 50% of your profit. With a 12% margin (common in grocery), 10% off wipes out 83% of your profit.
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