Selling a branded item is fine. Using the brand as if you were it is not.
What you may do
Name what you are selling. "Nike Air Force 1" on a listing for a genuine pair is a description.
Photograph your own item, including its labels and logos.
Say what condition it is in, in your own words.
What you may not do
Use the manufacturer's photographs. They are not yours, and they hide the condition of the actual thing you are selling — which is a misdescription with extra steps. Photograph it yourself; it takes five minutes and sells better.
Copy another seller's listing, text or photographs.
Imply endorsement. "Official", "authorised", "verified by" when you are not.
Sell counterfeits or branded replicas. Separate page.
If somebody has copied you
Report it with a link to your listing and theirs. We will look and take it down if it is what it appears to be.
If you are a rights holder
There is a takedown route. Tell us what the right is, where it is being infringed, and how you hold it.
Questions people ask
Can I use a logo in my store banner?
Not one you do not own.
Can I say "Nike" in my title?
To describe genuine Nike, yes.
What if somebody is using my photos?
Report it with both links.
Can I sell fan-made items of a franchise?
That depends on the franchise's rights and is not a question we can answer for you.
More: what you cannot sell.