Hi there,
As you can see at my profile, I am very experienced listing products in wordpress (setting up attributes, variations etc).
I am also familiar with eBay as I took care of a big account for almost 2 years.
To be honest, I am not very familiar with Amazon but I am a fast learner.
If you need a man of his word, with a very strong ethic and highly detail oriented, let's get in touch and discuss more details.
Kind Regards,
Florin