[bawolff]

The last browser extension i used that was basically an app was chatzilla for firefox, and that was a long time ago. I can't even think of an extension that would make sense as an independent app, let alone one i would pay for.

[therealx]

People pay for 2fa and password management. Granted the model of payment for those is usually shifted, but there could have been a sold product on the store. I would pay for the Adblockers I use, but just donate instead (when possible.) I could see a lot of b2b companies selling their extensions.

Edit: I have maybe 20 extensions installed in general. Everything to killing websites ability to affect my ability to copy/paste to transcoders.