Shopify Collective
Shopify Collective lets you connect with other Shopify stores and sell each other's products in Shopify.
Retailers can import complementary products directly from suppliers using Shopify, and start selling them without any inventory costs or commitments. Suppliers can get discovered by retailers, create price lists and share products for them to sell.
Your business can be both a supplier and a retailer. Shopify Collective is free to use with all Shopify plans, subject to store eligibility.