thanks for your question, the place is just right here, the ~AGORA territory ;) SN does not have yet a ad-post type, hopefully soon!

In the meantime, you can start from one of the following links, depending on your aim:

[⚖️ SELL] - [🛒 BUY] - [🧑‍💻 HIRE] - [🖇 OFFER] - [🧑‍⚖️ AUCTION] - [🤝 SWAP] - [🆓 FREE] - [⭐ REVIEW]

Let me know if you have any question, here to help you sell your stuff for sats 🧡