You'll need to make at least 3 posts here on Audio Circle so that you can participate in the Trading Circle.
Prices are required to be included. Also recommend stating: age, condition (Audiogon rating system is best), how much you loved each piece and why, any damages (be complete), what might be included (remote, cables, footers, etc.), how it will be shipped (original boxes is usually best), what circumstances each piece was used (pet, kid, smoke free, hours per week, etc.), reason(s) for sale, and references to sales on other sites.