Facebook has partnered with Shopify to allow you sell products directly from your FB business page! The costs are fairly low with a $9 monthly fee plus individual transaction fees.
Websimple will setup your Facebook business page and shop, enabling you to sell your products online in no time!
For more information please visit https://help.shopify.com/manual/sell-online/facebook-sales-channel
Content and images above are partially subscribed from Facebook website and is copyright of Facebook ©