Plan the product.
Test the numbers.
Then decide.
Build an Amazon launch plan before committing inventory, buying a high-ticket course, or subscribing to a stack of seller software.
No account. Core results stay free. Projects are stored in your browser.
Launch Readiness Report
Sample product plan
Not sure where to start?
Follow the beginner workflow instead of opening every calculator.
SellerPlanKit now guides you through the most useful order: model, FBA decision, budget, product, profit, ads, inventory, and report.
Connected tools
One scenario across the full planning journey
Start
Business Model
Match capital, time, inventory comfort, skills, and risk tolerance to a practical marketplace model.
Open tool →Start
Startup Cost
Estimate inventory, logistics, launch setup, software, and a practical safety buffer.
Open tool →Research
Product Viability
Score demand, competition, differentiation, margin, capital fit, and operating risk.
Open tool →Profit
True Profit
Calculate profit after landed cost, Amazon fees, fulfillment, ads, and expected returns.
Open tool →Advertising
ACoS & CPC
Find sustainable ad spend, ACoS, and CPC while preserving target profit.
Open tool →Advertising
PPC Launch Budget
Estimate testing clicks, daily budget, launch reserve, expected ACoS, and potential launch loss.
Open tool →Choose what to buy
Course and software decisions come after diagnosis.
Use the free tools first. Then decide whether the gap requires free education, a structured course, research software, PPC tools, profit analytics, or inventory forecasting.
Course Finder
Free training vs structured paid program vs specialist education.
Software Stack Builder
Free, starter, or growth stack without overlapping subscriptions.
Saved Projects
Keep multiple product ideas and compare scenarios.
Readiness Report
Copy, download, or print a decision-ready summary.
Decision-ready output
A calculator result is not the final answer.
SellerPlanKit turns the active scenario into a prioritized action plan, missing-information checklist, and portable Launch Readiness Report.
Action Plan
Fix the weakest economic or evidence assumption first.
Missing Data
See what still needs a supplier, marketplace, or research source.
Contextual Research
Course and software options appear only after diagnosis.
Portable Report
Copy, JSON, CSV, print, or optional email delivery.
Learn the numbers
Beginner-friendly guides
profit
How Returns Change Amazon Profit Per Unit
Spread expected return losses across all sales and find the return rate a product can sustain before profit reaches zero.
profit
Amazon True Profit: The Costs Beginners Commonly Miss
Learn how landed cost, referral fees, fulfillment, storage, advertising, returns, and selling-plan costs change profit per unit.
advertising
Break-even ACoS Explained for New Amazon Sellers
Understand break-even ACoS, target ACoS, maximum CPC, and why conversion rate changes the amount you can bid.