Any reason why you depend on Shopify?
I would think there are far better solutions for a shop that you could use?
It's not that hard to set up a simple Wordpress site zith a good e-commerce plugin...
The better solution is developing your own damn website.How hard is it to set-up a e-commerce website these days ? Hire a freelance ,spend a few hundreds,you're website is up and running instead of paying to services every time you make a deal.If you can learn coding,again a advantage over hiring a developer.Basically internet has everything you need to set -up an ecommerce site,the full source code,just have to connect the dots.
That was my entire point, minus paying a dev to set up the website, you can do it basically for free, there are free Wordpress plugins for that and also plugins that do not charge you per order.
In the end you pay less in total than you would when hiring a freelancer to do that.