Amazon Scam Floods Couple with Unwanted Packages
geek.com
geek.com
Aside from the product review issues listed here, Amazon seems to enforce almost nothing related to their core rules.
Do a search of your choice and look at the picture thumbnails. Amazon claims you need to put your picture on a white background with no text or other content other than the product. Maybe 50% of vendors are violating this for most searches, and nothing happens.
A more nefarious example that I haven't experienced but have friends who have: overseas manufacturers replicating your product, using the same SKU, and then allowing it to be listed as a variant of your original product. You can email Amazon all you want, but it's unlikely you will get Amazon to fix it.
tl;dr becoming a vendor on Amazon isn't as much of a walk in the park as some say it used to be, and there are a lot of headaches you have to deal with -- all while seller fees are increasing YOY.