Renting out that server is a great idea to make some extra money; since it's not used so much. Admins wouldn't need to pay as much. Some other hosting services either cost too much or the free ones are hosted in other countries.
I'm sorry, but why would we reduce the price of admin if we did this? Already, most of us super mods have issues dealing with shitty paid admins as is, the last thing we want is a price reduction so we can deal with more asshats.
I was thinking about selling servers again (I sold servers back in 2009) , but that wouldn't lower the cost of admin for FaceWAN, as the server would be your own.
You could use the money from renting to run the servers lowering the overall cost of admin by like $0.25 to $0.50