This is a donate plugin that is more cost effective than other donate plugins.
Port the https://www.spigotmc.org/resources/woominecraft-donation-plugin.25517/ plugin to the sponge and run it fully
The price needs to be quoted by the developer. I will send half of the item before the start of the project. The other half will be sent after the completion.
The plugin is open source, and it can be used by other people in need.