Just a heads up.....
Found on the Etsy Do's and Don't's page under Listing:
www.etsy.com/help/article/483#a4
>>>>>You may not use Etsy to direct shoppers to another online selling venue to purchase the same items as listed in your Etsy shop, as this may constitute fee avoidance. This includes posting links/URLs or providing information sufficient to locate the other online venue(s).<<<<<