At that point, I would use something like Gatsby which would build static pages for each of your product pages. You could host that on S3 with a CDN for cheap. You could downgrade the Shopify plan to $9/month since you're not going to be using their storefront.
thank you, but this doesnt solve the speed issues in my case. i could use sylius or any other ecom that i could host myself and use custom speedup on code instead of just on cdn:) shop i mean is in uk and has only uk customers, no need for cdn as customers arent spread globally or even on the continent.. as for static wouldnt that work for every solution? in that case theres no need for shopify at all... but as you say i could even keep static code generated and served from redis instead of s/hdd, that would be even faster
The main power of Shopify is the dashboard and the APIs. By having a custom storefront, Shopify just provides the APIs and a nice dashboard for non-programmers to use. You can also ditch Shopify later on since the storefront just builds off their API. Just my 2 cents. For $9/month, hosting something like Magento or even Woocommerce would be difficult.