Hi Sue P., thanks for your question! Bonanza has approximately ~50,000 sellers offering ~35 million items for sale.

This page has additional helpful information about selling and shopping on Bonanza: https://www.bonanza.com/site_help/basics/how_bonanza_works

If you have any other questions, please feel free to contact our support team directly anytime via email at support@bonanza.com. We appreciate your interest in Bonanza, Sue P.!