The only thing I have against Tokyo's two subway systems is that they don't run 24 hours a day, though that may change for one of them. In almost every other aspect I think they're pretty terrific, and since Tokyo Metro is cheaper than the Toei subway network, it's even more terrific. Does that sound funny, calling something in Japan cheap? In terms of average fares, it's actually one of the cheapest in the world. Of all the world capitals, only Mexico City, Beijing, Seoul and Moscow are cheaper. And considering how clean and reliable the Metro is, it's even more of a bargain.

And because it's cheap patrons may take it for granted. Since the advent of the PASMO rechargeable smart card, which enables mass transit users in the Tokyo metropolitan area to enter and exit stations, as well as transfer from one mode of transport to another, without the need for tickets, Tokyo Metro has increased the number of wickets in stations that don't take tickets. PASMO and JR's Suica card obviate the need to buy individual tickets, and thus save time and resources, but they don't necessarily save money. If your PASMO is also a Tokyo Metro credit card you can earn points when you ride that can be used for discounts, but the discount comes out to less than one percent. However, if you buy tickets of the same value in multiples of 10 from either Tokyo Metro or JR, you get an 11th for free, meaning a discount of 10 percent. These multiple tickets are called kaisuken.