I am sorry you have to rehome you snake. Don't be surprised if you have a hard time selling the tank. Is Memphis a normal? IF you are able to sell the entire setup you might get about 100. I know it doesn't seem fair, because you spent more than that, but it is all used. IF it where me I would post Memphis here and then you would at least give him to a home that knows about snakes (hopefully).
Good luck in finding a new home.