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Merge Amazon Seller Central and Wix Sales Data for Reseller Income Tracking

Resellers selling the same inventory across platforms need one combined view of what actually sold and where.

Why Amazon Seller Central and Wix exports don't line up

Amazon Seller Central: a purchase date/time column stamped in UTC, not your local time; item price, promotion discounts, and Amazon referral fees split across several columns; an Amazon Order ID in a long dashed format (e.g. 123-4567890-1234567). Also, reports differ noticeably between the 'All Orders' report and the Payments/Settlement report — totals rarely match at a glance.
Wix: a Date Created column; a Total column with tax handling that varies by store region; an Order # formatted as a short number. Also, product options (size, color) are appended into the item name rather than given their own column.

For reseller income tracking, that mismatch is exactly what causes hours of manual cleanup every period.

Open CSV Experts and set your target columns once (Date, Channel, Order ID, Total).
Drop in your Amazon Seller Central export and map its columns once.
Drop in your Wix export and map it the same way — both merge into one sheet, normalized.
Export as CSV or Excel. Same-layout files merge automatically next time.

No. Everything runs in your browser using JavaScript — your files are never sent to a server.

Yes. Add as many source files as you want; each distinct file layout is mapped once and remembered.