Update & List products on Notonthehighstreet & Amazon

General information for the website: List products on sales channels using website information, update photos and descriptions
Description of requirements/features: This is not a simple spreadsheet upload task and great amount of care needs to be taken with this

This is an initial big work load and then ongoing work
Please do not quote this job until you fully understand the task and able to complete the task.

There are 300 ish items on the website that are fully updated with the correct pictures and descriptions, what I need done is this information put on to existing amazon listings including updating photos . Also items that are not listed need to be identified and new listing created . This is the same principle for notonthehighstreet

Please note that our products are very similar and can easily be confused if you don't take a great deal of care

Task needs to be completed in maximum of 2 weeks
Extra notes: