About Seller Tools
Practical tools for sellers’ recurring calculations and file tasks, with examples, sources and clear limits.
Tools for work you do more than once
Seller Tools helps you work through selling prices, discounts, shipping, returns, overseas payouts and everyday tasks using your own figures. Alongside each result, we explain the inputs, method, scope and costs that are easy to miss.
The site grew out of Woori Home Cost, a Korean site about household costs. Its earlier appliance and household-cost pages keep their addresses, while the site now focuses on practical tools for sellers.
What we build
- We start with questions sellers often search for and tasks they repeat.
- Fees, exchange rates, shipping rules and taxes depend on the transaction. We let you enter your actual conditions and identify the scope and source of any reference value.
- We show examples and exclusions so you can compare a result with a real statement.
- Tool calculations run in your browser. You do not need a separate account or a paid API subscription to calculate.
- We correct confirmed errors and review sources and check dates when relevant rules or rates change.
The English edition
The English edition includes the character and UTF-8 byte counter, unit converter, time zone meeting planner and bulk title length checker. The rest of the tool directory and seller news currently use Korean. An English interface does not change the country or field covered by a platform rule.
Read our editorial principles and correction process, or send an error report or suggestion.