Empower your Download Manager (https://downloadmanagerplugin.com/) with MicroPayment support. Allow your users to pay for downloaded files or grant them virtual money for uploading them. You can integrate MicroPayment with a real payment gateway like PayPal, or use the Easy Digital Downloads plugin and choose from over 40 payment gateways.
The Download Manager Plugin from CreativeMinds is a fully-featured WordPress file sharing plugin, which allows you to easily upload and share video, audio and document files to groups of users and individuals, based on a built-in access restriction system.
The MicroPayment Plugin from CreativeMinds adds the support for your own “virtual currency“ and allows in-site transactions without the need to use external payment gateways for processing each payment.
More info and free download on: https://downloadsmanager.cminds.com