MARKETPLACE FEE VERIFICATION
Marketplace fee verification for cross-border sellers.
Calculate supported US marketplace fees using versioned rules, then inspect the exact rule, evidence and official source behind each fee line.
Scenario inputs
Optional profit inputs
These stay in your browser and are not part of the marketplace rule engine.
Beta scope: selected US fee categories only. Unsupported or missing contexts return an explicit status instead of guessing.
Calculation receipt
Enter a scenario to calculate.
The result will show fee lines, rule IDs, evidence status and official source links.
Rule provenance
Quick actions
RULE PROVENANCE
Inspect the evidence behind every published fee rule.
Review rule versions, effective dates, evidence claims and the official sources used by the calculator.
REAL-WORLD VERIFICATION
Backtest the rule engine against actual settlement fees.
CSV parsing and comparison run in your browser. The prototype does not upload the selected file.
PRICE INTELLIGENCE跨平台商品比价
Compare the same product across marketplaces and countries.比较同一商品在不同平台和国家站点的价格与利润
Normalize buyer prices with explicit FX snapshots, then use RuleTrace fee rules only where a verified release exists.用明确的汇率快照统一买家价格；只有存在已验证规则的站点才计算平台费用和卖家利润。
FX snapshots汇率快照
Enter the exact conversion rates you want this comparison to use. RuleTrace does not invent or silently fetch a rate.填写本次比较要使用的明确汇率。RuleTrace 不会猜测，也不会静默抓取汇率。
Marketplace offers平台报价
Comparison receipt比价回执
Add at least two offers and run the comparison.至少添加两个报价后开始比较。
Unsupported fees remain explicit instead of being guessed.未验证的平台费用会明确显示为不支持，不会猜算。