Tokyo Metro Pass

Only metro: Adult: 600 yen, Child: 300 yen

Metro and Toei: Adult: 900 yen, Child: 450 yen

There are many train company in Tokyo. Toei and Metro are biggest and they cover center of Tokyo. Cheapest ticket cost around 170 yen. If you ride at least 4 or 5 times a day, the pass is better. I recommend you to charge 1000 yen everytime.