Ebay File Exchange Data File with variations

I Have a complete dump of our database of all of our products with their variations of size, colour etc. I am looking to have a Ebay File exchange spreadsheet creating which will enable us to upload approx 1500 items with all of the appropriate variations of size and colour for each item. Bidder must have experience of doing this exact work and a full understaning of the ebay file exchange system. Work is required to be complete in 2 days, we will expect a test verify file from bidder with 10 items to confirm your methodology is correct before you deliver the complete file.