Did we have to buy Licences?

Hello everybody,
we want to use virtualhere in our network. We have some rasperry Pi's and are running xfreerdp on it. On 3 off the raspberry's we have to install a virtual here server for local printers. Per server there is only one member(client) and one usb port used. Did we have to buy 3licences because we are a company or can we use it for free?
Thank you best wishes.


No need to purchase if you only want to use one device, and dont resell virtualhere on your own device.