Hi,
I am a seller on amazon for over 1 yr.
I understand what you are asking to be done and yes it would be easier to use an excel in order to upload the products.
For 6k of products not sure how long it would take to copy and paste the info needed.
I would say 10 hours, really not sure on that.
but once the listing are up then would just need to check each and make sure they are correct, have image, inventory and are active and ready for selling.
I am available for immediate start.
Hours M-F 7am-6pm cst, weekends as needed upon request.
Look forward to hearing from you soon,
Corina