Well, There is no doubt that you can easily drive traffic from Social media Sites, but that traffic will not be targeted, specially when compared to Search Engine Traffic.
But you can still generate some sales by keeping an eye on your social media.
First of all, I would like you to share your content in FB Groups, on Linkedin, Pinterest, Twitter in different timings and then, check the bounce rate of the traffic, it will give you a fair idea about the traffic, the lesser the bounce rate, the more targeted traffic. So, then you can easily drive some targeted visitors, which will result in some sales.
I hope this helps.