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Merge Amazon Seller Central and Depop Sales Data for Spreadsheet Automation

Automating a recurring sales spreadsheet breaks the moment a platform's export headers don't match what the automation expects.

Why Amazon Seller Central and Depop 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.
Depop: a transaction date column; item price and Depop's payment processing fee as separate lines; a transaction ID rather than a traditional order number. Also, like Poshmark, the export is minimal and mixes sold, refunded, and offer-related rows together.

For spreadsheet automation, 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 Depop 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.