Start with the Marketplace Launch Planner
Pressure-test Amazon, Temu, TikTok Shop, Shopee or AliExpress before you buy inventory, tools or ads.
Know your real margin before you source from China
Estimate landed cost, supplier risk, waiting time, marketplace fees and whether buying from China beats local wholesale.
Platform profit calculators
Amazon Profit Calculator
Net profit, margin, ROI and break-even ACOS for FBA / FBM sellers.
Temu Semi-managed Profit
US-warehouse model: commission, last-mile, ads and returns.
TikTok Shop US Profit
Stack commission, payment, creator affiliate, ads and fulfillment.
Shopee Cross-border Profit
Cross-border SEA model with Shopee+/SBS service fee support.
AliExpress Profit
Commission, transaction fee, affiliate marketing and direct ads.
Decision helpers
Guides
Amazon FBA Fees in 2026
Referral fees, FBA fulfillment, storage, inbound placement, returns, ads and margin workflow.
Temu vs TikTok Shop in 2026
Fees, traffic logic, profit math, and a 5-rule decision tree for cross-border sellers.
Browse seller guides
Long-form articles that pair with the Profitmates calculators.
No sign-up, instant calculations, bilingual pages, scenario presets for standard / apparel / oversized SKUs.
- Live recalculation as you type — no submit button needed.
- localStorage saves the last input set per tool, per language.
- Preset buttons jump-start a calculation with category-typical defaults.