One product file reviewed for a fixed $99. I use my own CSV QA engine to review one CSV or Excel product file of up to 2,000 rows, 30 columns and 8 MiB. Delivery includes the reviewed file, issue log and QA report, with authorised safe fixes. Checks cover missing fields, duplicate SKUs, price formats and malformed EAN/GTIN values. Ambiguous values are flagged for your decision; barcode format checks do not establish ownership. Four calendar days after funding and complete agreed inputs. One revision included. This is source-file QA. Platform mapping, supplier-to-Shopify conversion, images, joins, external barcode checks, feed setup, live-store changes and full migration are outside the task. Your team handles conversion and import. No guarantee of platform acceptance. Published demonstrations use synthetic own test data, not client case studies. Message me with the file format, approximate row count and target date. Use made-up example rows for the initial fit check. I confirm scope before you order.