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Keystone pricing

Markup Calculator for Resellers

Enter item cost and planned sale price to calculate markup, gross margin, gross profit, and common keystone pricing targets before marketplace fees.

Inputs
Markup result
Markup

150.0%

gross profit divided by item cost

Gross margin

60.0%

gross profit divided by sale price

Gross profit before fees

$30.00

sale price minus item cost before shipping and marketplace fees

Keystone checkpoints
2x cost
$40.00
2.5x cost
$50.00
3x cost
$60.00
Data sources

Check markup against marketplace fee data

Markup and keystone targets are set before marketplace fees, but the final listing decision depends on fee drag. Use the Fee Index for same-input marketplace rows, Fee Changes for recent policy updates, and Seller Reports for dated summaries before turning a pricing rule into a listing plan.

After the source check, use the markup result as the starting point for a platform calculator or break-even pass.

Next decision checks

Turn this result into a listing decision

Use the tool result as a starting point, then test payout, break-even price, shipping, and marketplace fit before you publish the listing.

Markup versus margin

Markup compares profit to cost. Margin compares profit to sale price. A $20 item listed for $50 has a 150% markup but a 60% gross margin before marketplace fees.

Resellers use markup for sourcing rules because it starts with buy cost. Margin is better after fees because it shows how much of the sale price remains as profit.

Related tools

Use COGS before markup when buying lots, profit margin after marketplace fees, and break-even when you need the lowest viable sale price.