Hi there!
Thanks for reaching out to us.
Yes, you can upload a single site to your online server. You can use the same license key in your sub-domains and localhost too.
All the EasyStore plans not only give you access to the EasyStore but also to all of our products including Templates, Extensions, SP Page Builder Pro.
https://prnt.sc/4MknKbtPZEHi
However, I think you will find that is an incredible deal, even if you only intend to use a single component from our collection. Do not forget that you can download all the templates, plus the extensions during your active subscription period.
Your subscription is a one-time payment. You will not need to renew later to keep using end-products. But if you need updates, support, and download access after the expiration, then you need to renew the subscription.
So it is a lifetime in terms of usage. If you have downloaded the product and kept it on your machine during your active subscription period, then you can use it even after the expiration of your subscription.
You will find about what happens when your subscription runs out here:
https://www.joomshaper.com/pricing#v-pills-general
Best Regards