The marketplace
A plugin is a feature you add to your workspace when you need it, and pay for over a set period. Marketplace is in the sidebar.
Browsing
The marketplace lists the plugins available, filtered by category. One you are subscribed to is marked.
A plugin's page
Open a plugin to see its description and category, its price in Egyptian pounds, and how long it lasts: "Valid for 30 days". If a subscription is running you see a "Subscription Active" banner with the date it ends.
Renting and renewing
"Rent" starts a subscription; "Renew" extends it.
The plugins that exist
Three are built and working today:
The others in the marketplace are listed, but their features are not built yet.