Looking for a reverse ecommerce template

Are there any themes that I can have people sell their devices on, it calculates their pay, and pay them for their used devices? Its like a reverse ecommerce. Not sure of the name for it. Thanks

You may need to be a bit more clear

Here’s an example. Where someone can sell their used device and get cash for it. It prices the device out depending on condition.


You should be looking for “price calculator” extensions/features