We play casual football (soccer / futsal) and basketball games at various indoor and outdoor locations in Amsterdam, two or three times a week. We usually play 5v5 or 6v6.
The costs for an 1,5 hour indoor game may be anywhere between 4 and 9 Euro per person, depending on the number of players. Payment is in cash, directly after the game. Outdoor games are typically free.
At this point our football / soccer group is more or less closed for new members / membership is by invitation only as we want to keep the group small so that everybody in our group who wants to play has a good chance of being able to play at any given game.
We are still looking for new basketball players though, so if you want to play basketball, please apply to the group and I'll approve you. To be sure, when you sign up to play basketball you cannot play the football games.
Organize your own games
Sometimes we don't have enough players for our football games though in which case we announce the game on the page of the other indoor football group, http://www.meetup.com/amsterdam-indoor-foot.... So be sure to sign up there to be informed whenever we need players.
You can also use that group to set up your own group and games. There are plenty of people who want to play football in Amsterdam, so if you decide to organize games you should have no problem. Here is all the info you need for that http://www.meetup.com/amsterdam-indoor-foot...