Hi VintageWares,
I will support Nick’s answer here. Etsy Marketplace Integration App will help you to integrate your Shopify store into the Etsy store. As you have said in your last message that you want a solution that can sync your Etsy products to Shopify, the Etsy Marketplace Integration App will help you in this too.
You want to use a free app that can work for you, so I want to clear here that, this app provides you a free plan in which you can manage 10 products from Shopify to Etsy but unlimited from Etsy to Shopify. You will get 24*7 support from the technical team and the support team will also help you to know more about the discounts.
Let me know if you want any more information on this.
Thank you.