MarginKit
Category hub

Marketplace Seller Tools

Optimize selling price and paid traffic economics with break-even and margin-aware calculators.

When to use these tools

Use this hub when you need fast operational decisions without opening multiple spreadsheets.

Decisions supported

These calculators help with pricing thresholds, margin protection, reorder timing, and channel planning.

What to calculate first

Suggested flow

A practical sequence for faster decision-making in this category.

Step 1

Break-even Selling Price After Import Costs

Step 2

Break-even ROAS Calculator for E-commerce

Step 3

Margin Calculator After Shipping Fees

Best starting point

Start with this calculator first

For most users in this category, this tool gives the first high-impact decision signal.

Featured start

Break-even Selling Price After Import Costs

Calculate your price floor after landed costs, shipping, and import fees so you do not underprice SKUs.

Open calculator

Tools

Core calculators in this hub

Choose a calculator and start with your real numbers.

Related

Useful next tools

Continue analysis in adjacent workflows for fuller decisions.

FAQ

Frequently asked questions

Practical guidance for this category.