Start with the decision you need to make
Each worked example separates an assumed input from a calculated result. Change the assumptions in the interactive examples, then use your own evidence in the full calculator.
Browse all calculators →Costs, advertising and operating profit
Amazon Break-Even ACOS: From Product Costs to an Ad Limit
Translate order contribution into an advertising ceiling, a target-profit ACOS and a CPC scenario with a reproducible example.
Read the guide →Amazon fulfillmentAmazon FBA vs FBM: A Like-for-Like Profit Comparison
Compare the same product under FBA and merchant fulfillment, including inbound costs, labor, storage and acquisition.
Read the guide →Store economicsThe True Cost of Shopify: A Per-Order and Monthly Model
Separate subscriptions from order costs, test different sales volumes and calculate when payment savings justify a more expensive plan.
Read the guide →Etsy pricingEtsy Pricing With Labor, Fees and Offsite Ads
Price a handmade product from materials, labor and fees, then compare normal, ad-attributed and blended order scenarios.
Read the guide →Walmart fulfillmentWalmart WFS vs Seller Fulfillment: Find the Cost Crossover
Compare equivalent delivery routes using inbound shipping, packing labor, storage and fixed operating costs.
Read the guide →Advertising economicsBreak-Even ROAS, CPA and CPC for Google Shopping
Turn order contribution into break-even and target-profit ROAS, then test how conversion rate changes the CPC allowance.
Read the guide →Dropshipping economicsDropshipping Unit Economics: From Supplier Price to Profit
Build a complete order cost card, compare delivered supplier costs and find an advertising allowance that leaves profit.
Read the guide →Returns and riskHow Returns Change Ecommerce Profit: A Two-Outcome Model
Model kept and returned orders using refunds, recovered inventory and non-refundable costs instead of an unexplained reserve.
Read the guide →Monthly planningMonthly Ecommerce Profit Is Not the Same as Cash Available
Reconcile order contribution with subscriptions, inventory purchases and held payouts in a complete monthly example.
Read the guide →TikTok Shop seller guides
Existing guides cover profit, product pricing, fulfillment options and creator commissions. Use your current account terms for any platform-specific rates.
How to Calculate True TikTok Shop Profit
Learn how to calculate TikTok Shop profit after COGS, fulfillment, referral fees, creator commissions, advertising, returns and other costs.
Read the guide →TikTok ShopHow to Price TikTok Shop Products for Profit
Learn how to price TikTok Shop products using COGS, fulfillment, referral fees, creator commissions, ads, returns and target margin.
Read the guide →TikTok ShopTikTok Shop Creator Commission Rates: A Seller's Guide
Learn how TikTok Shop creator commissions work, how sellers set affiliate rates and how commissions affect product margin and break-even.
Read the guide →TikTok ShopFBT vs 3PL for TikTok Shop: Which Fulfillment Option Fits Your Economics?
Compare Fulfilled by TikTok with 3PL or seller fulfillment. Model shipping, storage, handling, speed and per-order economics.
Read the guide →