ZpeCommerce is an up and coming eCommerce channel in the UK with a very strong offering vs. WordPress, Wix, Weebly, etc.
After comparing and trialling WordPress and Weebly, I chose ZpeCommerce because it is so easy to create a professional looking online store. It has most everything integrated, at a v. competitive price and I am almost up and running in a very short space of time.
What it doesn't have is what ShipStation offers, and I do believe that it would be worth adding ZpeCommerce as a selling channel, especially as it is very likely to attract more attention and new business.
Until then, I am going to have to figure out how to set up a custom integration (hopefully whilst I still have my free trial with ShipStation), but it would greatly enhance my workflow and decrease my time to market if it were already an option.