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Margin Simulator

Real-time P&L modeling for product businesses

Product Presets

Input Parameters

$8.50
$0.5Most products: $3–$25$100
$2.80
$0.1Sea freight avg: $0.50–$4$15
25.00%
0%China 301: 7.5–25%50%
$1.20
$0.1Simple poly bag to custom box$10
15.00%
0%Amazon 15%, Shopify ~3%, Etsy 6.5%40%
$3.00
$0PPC avg: $2–$8 per acquisition$30
$49.99
$5Amazon sweet spot: $15–$50$300
1,000 units
50 unitsNew launch: 200–1,000/mo50,000 units
$2,000
$0Rent, software, insurance, etc.$20,000

Unit Economics

Gross Margin

70.7%

Net Margin

49.7%

Profit / Unit

$24.87

Break-even

81 units

Revenue
$49.99100.0%
COGS
$14.6329.3%
Platform Fee
$7.5015.0%
Marketing
$3.006.0%
= Net Profit
$24.8749.7%

Monthly Revenue

$50.0K

Monthly Profit

$22.9K

Annual Profit

$274.4K

Where Each Dollar Goes

17%
15%
6%
50%
Manufacturing $8.50
Shipping $2.80
Tariff $2.13
Packaging $1.20
Platform $7.50
Marketing $3.00
Profit $24.87

Break-Even Analysis

0BE: 81You: 1,0002,000 units
$47.7K
$0
-$2.0K
Current: 1,000 units = $22.9K/mo
Break-even: 81 units (covers $2,000/mo fixed)

Smart Insights

Amazon's referral + FBA fees average 30–35% of retail. Your effective take-home is $24.87/unit. Consider D2C to save $6.05/unit.
Section 301 tariffs add $2.13/unit. Vietnam equivalent tariff is 5%. Annual savings on 1,000 units: $20.4K.

Sensitivity Analysis

How your profit per unit changes when each variable moves by ±10%

Your margin is most sensitive to retail price. A 10% change swings profit by up to $4.25/unit.
VariableCurrent-10% Impact+10% ImpactSensitivity
Manufacturing Cost$8.50+$1.06-$1.06Medium
Shipping Cost$2.80+$0.28-$0.28Low
Tariff Rate25.0%+$0.21-$0.21Low
Packaging Cost$1.20+$0.12-$0.12Low
Platform Fee15.0%+$0.75-$0.75Medium
Marketing Cost$3.00+$0.30-$0.30Low
Retail Price$49.99-$4.25+$4.25High

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