What are some alternatives?
Arcadier - Build an online marketplace in minutes, no coding required.
WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.
Kreezalid - Marketplace building solution for small to midsize firms
Shopery Marketplaces - Shopery Marketplaces empowers ventures and brands to build and scale their marketplaces through a SaaS solution.
Shopify - Shopify is a powerful ecommerce platform that includes everything you need to create an online store and sell online. Try it free for 14 days.
Dokan Multivendor Marketplace - Dokan is the best front end multi vendor marketplace on WordPress.