Multipool costs about 150 dollar/month. It is a litle bit much,
Multipool costs much bigger; 500$+ for me. Do you remember that you need not only pool-server but also big server(i had entire cluster) for 40-50 coin-wallets?
150 dollar will be enogh. We don't need 40-50 coins. 10 coins enogh in my opinion. ANd I can change only the 10 most profitable. (X11 and scrypt multiport)