Subscribe to individual plugins or themes

In addition to the "levels" that create packages/bundles with group of plugins and themes, can I also set up the Pro site to allow sub site admin Subscribe to individual plugins or themes?

Say, if people do not like bundled deal (plugin 1 + plugin 2 + plugin 3), they can just pay to use one plugin or a few plugins they choose to activate and use.

More like allowing subsite admin to create/customize their own subscription plan according to their needs .

Is it possible?