Creating Threads in the Marketplace requires an Upgrade

[25]

it says Creating Threads in the Marketplace requires an Upgrade but I saw lot of non upgraded members are posting threads and I can also post them?
Is this a bug or did I understand it wrong?

[2.315]

u can post in buyers bay not seller's marketplace

[2.046]

You can post a thread in the Buyer marketplace without upgrade.

But in order to sell, you need an upgrade.

a retired fatcat

[25]

You can post a thread in the Buyer marketplace without upgrade.

But in order to sell, you need an upgrade.

aaah sh*t i was gonna sell configs here but I don't have any money!!
Any ideas how I can sell configs here?