https://blog.openbazaar.org/beta-3-0-tabriz-is-released/ "OpenBazaar is an open source project to create a decentralized network for peer to peer commerce online—using Bitcoin—that has no fees and cannot be censored. Put simply, it’s the baby of eBay and BitTorrent." https://blog.openbazaar.org/what-is-openbazaar/
The booboo overlay has a git-version eBuild: https://gpo.zugaina.org/net-p2p/openbazaar Sadly it seems outdated - as far as I understood, the client and server had been separated since then and the eBuild is no longer functional. Client: Latest release from https://github.com/OpenBazaar/OpenBazaar-Client/releases is 1.1.5 as of today. Server: Latest release from https://github.com/OpenBazaar/OpenBazaar-Server/releases is 0.1.8 as of today.
Since a year passed after latest update - seems OpenBazaar now mature: Latest Client version is v1.1.12 https://github.com/OpenBazaar/OpenBazaar-Client/releases/tag/v1.1.12 Latest Server version is v0.2.5 https://github.com/OpenBazaar/OpenBazaar-Server/releases/tag/v0.2.5
